﻿<?xml version="1.0" encoding="utf-8"?>
<Return xmlns="http://www.irs.gov/efile" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.irs.gov/efile" returnVersion="2010v3.4">
  <ReturnHeader binaryAttachmentCount="0">
    <Timestamp>2011-11-15T09:51:47-06:00</Timestamp>
    <TaxPeriodEndDate>2011-06-30</TaxPeriodEndDate>
    <PreparerFirm>
      <PreparerFirmBusinessName>
        <BusinessNameLine1>Kositzka Wicks and Company</BusinessNameLine1>
      </PreparerFirmBusinessName>
      <PreparerFirmUSAddress>
        <AddressLine1>5500 Cherokee Ave Suite 400</AddressLine1>
        <City>Alexandria</City>
        <State>VA</State>
        <ZIPCode>22312</ZIPCode>
      </PreparerFirmUSAddress>
    </PreparerFirm>
    <ReturnType>990</ReturnType>
    <TaxPeriodBeginDate>2010-07-01</TaxPeriodBeginDate>
    <Filer>
      <EIN>201308252</EIN>
      <Name>
        <BusinessNameLine1>GeoScienceWorld</BusinessNameLine1>
      </Name>
      <NameControl>GEOS</NameControl>
      <Phone>7036714791</Phone>
      <USAddress>
        <AddressLine1>4220 King Street</AddressLine1>
        <City>Alexandria</City>
        <State>VA</State>
        <ZIPCode>22302</ZIPCode>
      </USAddress>
    </Filer>
    <Officer>
      <Name>Alix Vance</Name>
      <Title>Executive Director</Title>
      <Phone>7036714791</Phone>
      <DateSigned>2011-10-18</DateSigned>
      <AuthorizeThirdParty>1</AuthorizeThirdParty>
    </Officer>
    <Preparer>
      <Name>Stephen G Travis</Name>
      <Phone>7036422700</Phone>
    </Preparer>
    <TaxYear>2010</TaxYear>
    <BuildTS>2016-02-24 21:20:13Z</BuildTS>
  </ReturnHeader>
  <ReturnData documentCount="5">
    <IRS990 documentId="RetDoc1038000001" referenceDocumentId="RetDoc1044400001">
      <NameOfPrincipalOfficerPerson>Alix Vance</NameOfPrincipalOfficerPerson>
      <AddressPrincipalOfficerUS>
        <AddressLine1>4220 King Street</AddressLine1>
        <City>Alexandria</City>
        <State>VA</State>
        <ZIPCode>22302</ZIPCode>
      </AddressPrincipalOfficerUS>
      <GrossReceipts>3807202</GrossReceipts>
      <GroupReturnForAffiliates>0</GroupReturnForAffiliates>
      <Organization501c3>X</Organization501c3>
      <WebSite>geoscienceworld.org</WebSite>
      <TypeOfOrganizationCorporation>X</TypeOfOrganizationCorporation>
      <YearFormation>2004</YearFormation>
      <StateLegalDomicile>VA</StateLegalDomicile>
      <ActivityOrMissionDescription>To provide an online resource for the geological and earth sciences.</ActivityOrMissionDescription>
      <NbrVotingMembersGoverningBody>9</NbrVotingMembersGoverningBody>
      <NbrIndependentVotingMembers>9</NbrIndependentVotingMembers>
      <TotalNbrEmployees>4</TotalNbrEmployees>
      <TotalNbrVolunteers>0</TotalNbrVolunteers>
      <TotalGrossUBI>0</TotalGrossUBI>
      <NetUnrelatedBusinessTxblIncome>0</NetUnrelatedBusinessTxblIncome>
      <ContributionsGrantsPriorYear>0</ContributionsGrantsPriorYear>
      <ContributionsGrantsCurrentYear>0</ContributionsGrantsCurrentYear>
      <ProgramServiceRevenuePriorYear>3292388</ProgramServiceRevenuePriorYear>
      <ProgramServiceRevenueCY>3800141</ProgramServiceRevenueCY>
      <InvestmentIncomePriorYear>5099</InvestmentIncomePriorYear>
      <InvestmentIncomeCurrentYear>7061</InvestmentIncomeCurrentYear>
      <OtherRevenuePriorYear>0</OtherRevenuePriorYear>
      <OtherRevenueCurrentYear>0</OtherRevenueCurrentYear>
      <TotalRevenuePriorYear>3297487</TotalRevenuePriorYear>
      <TotalRevenueCurrentYear>3807202</TotalRevenueCurrentYear>
      <GrantsAndSimilarAmntsPriorYear>0</GrantsAndSimilarAmntsPriorYear>
      <GrantsAndSimilarAmntsCY>0</GrantsAndSimilarAmntsCY>
      <BenefitsPaidToMembersPriorYear>0</BenefitsPaidToMembersPriorYear>
      <BenefitsPaidToMembersCY>0</BenefitsPaidToMembersCY>
      <SalariesEtcPriorYear>292862</SalariesEtcPriorYear>
      <SalariesEtcCurrentYear>308041</SalariesEtcCurrentYear>
      <TotalProfFundrsngExpPriorYear>0</TotalProfFundrsngExpPriorYear>
      <TotalProfFundrsngExpCY>0</TotalProfFundrsngExpCY>
      <TotalFundrsngExpCurrentYear>0</TotalFundrsngExpCurrentYear>
      <OtherExpensePriorYear>2893033</OtherExpensePriorYear>
      <OtherExpensesCurrentYear>3366460</OtherExpensesCurrentYear>
      <TotalExpensesPriorYear>3185895</TotalExpensesPriorYear>
      <TotalExpensesCurrentYear>3674501</TotalExpensesCurrentYear>
      <RevenuesLessExpensesPriorYear>111592</RevenuesLessExpensesPriorYear>
      <RevenuesLessExpensesCY>132701</RevenuesLessExpensesCY>
      <TotalAssetsBOY>1501267</TotalAssetsBOY>
      <TotalAssetsEOY>1553091</TotalAssetsEOY>
      <TotalLiabilitiesBOY>1036612</TotalLiabilitiesBOY>
      <TotalLiabilitiesEOY>955735</TotalLiabilitiesEOY>
      <NetAssetsOrFundBalancesBOY>464655</NetAssetsOrFundBalancesBOY>
      <NetAssetsOrFundBalancesEOY>597356</NetAssetsOrFundBalancesEOY>
      <MissionDescription>Build a comprehensive online resource for the geological and earth sciences.</MissionDescription>
      <SignificantNewProgramServices>0</SignificantNewProgramServices>
      <SignificantChange>0</SignificantChange>
      <Expense>3591248</Expense>
      <Revenue>3800141</Revenue>
      <Description>The organization has built a comprehensive, widely-accessible easy to use online resource for peer-reviewed journals as well as books, field guides, maps, databases and other information relative to the geological and earth sciences.</Description>
      <TotalProgramServiceExpense>3591248</TotalProgramServiceExpense>
      <DescribedIn501C3 referenceDocumentId="RetDoc1039100001">1</DescribedIn501C3>
      <ScheduleBRequired>0</ScheduleBRequired>
      <PoliticalActivities>0</PoliticalActivities>
      <LobbyingActivities>0</LobbyingActivities>
      <DonorAdvisedFunds referenceDocumentId="RetDoc1040000001">0</DonorAdvisedFunds>
      <ConservationEasements referenceDocumentId="RetDoc1040000001">0</ConservationEasements>
      <CollectionsOfArt referenceDocumentId="RetDoc1040000001">0</CollectionsOfArt>
      <CreditCounseling referenceDocumentId="RetDoc1040000001">0</CreditCounseling>
      <TermOrPermanentEndowments referenceDocumentId="RetDoc1040000001">0</TermOrPermanentEndowments>
      <ReportLandBldgEquip referenceDocumentId="RetDoc1040000001">0</ReportLandBldgEquip>
      <ReportInvestOthSecurities referenceDocumentId="RetDoc1040000001">1</ReportInvestOthSecurities>
      <ReportProgRelInvest referenceDocumentId="RetDoc1040000001">0</ReportProgRelInvest>
      <ReportOtherAssets referenceDocumentId="RetDoc1040000001">0</ReportOtherAssets>
      <ReportOtherLiabilities referenceDocumentId="RetDoc1040000001">0</ReportOtherLiabilities>
      <ReportFin48Footnote referenceDocumentId="RetDoc1040000001">1</ReportFin48Footnote>
      <IndependentAuditFinancialStmt referenceDocumentId="RetDoc1040000001">1</IndependentAuditFinancialStmt>
      <ConsolidatedAuditFinancialStmt referenceDocumentId="RetDoc1040000001">0</ConsolidatedAuditFinancialStmt>
      <School>0</School>
      <ForeignOffice>0</ForeignOffice>
      <ForeignActivities>0</ForeignActivities>
      <MoreThan5000KToOrganizations>0</MoreThan5000KToOrganizations>
      <MoreThan5000KToIndividuals>0</MoreThan5000KToIndividuals>
      <ProfessionalFundraising>0</ProfessionalFundraising>
      <FundraisingActivities>0</FundraisingActivities>
      <Gaming>0</Gaming>
      <Hospital>0</Hospital>
      <GrantsToOrganizations>0</GrantsToOrganizations>
      <GrantsToIndividuals>0</GrantsToIndividuals>
      <ScheduleJRequired referenceDocumentId="RetDoc1042400001">1</ScheduleJRequired>
      <TaxExemptBonds>0</TaxExemptBonds>
      <ExcessBenefitTransaction>0</ExcessBenefitTransaction>
      <PriorExcessBenefitTransaction>0</PriorExcessBenefitTransaction>
      <LoanToOfficerOrDQP>0</LoanToOfficerOrDQP>
      <GrantToRelatedPerson>0</GrantToRelatedPerson>
      <BsnssRltnshpWithOrganization>0</BsnssRltnshpWithOrganization>
      <BsnssRltnshpThruFamilyMember>0</BsnssRltnshpThruFamilyMember>
      <OfficerEntityWithBsnssRltnshp>0</OfficerEntityWithBsnssRltnshp>
      <DeductibleNonCashContributions>0</DeductibleNonCashContributions>
      <DeductibleContributionsOfArt>0</DeductibleContributionsOfArt>
      <Terminated>0</Terminated>
      <PartialLiquidation>0</PartialLiquidation>
      <DisregardedEntity>0</DisregardedEntity>
      <RelatedEntity>0</RelatedEntity>
      <RelatedOrgControlledEntity>0</RelatedOrgControlledEntity>
      <TransactionRelatedEntity>0</TransactionRelatedEntity>
      <TransfersToExemptNonChrtblOrg>0</TransfersToExemptNonChrtblOrg>
      <ActivitiesConductedPartnership>0</ActivitiesConductedPartnership>
      <ScheduleORequired>1</ScheduleORequired>
      <NumberFormsTransmittedWith1096>2</NumberFormsTransmittedWith1096>
      <NumberW2GIncluded>0</NumberW2GIncluded>
      <NumberOfEmployees>4</NumberOfEmployees>
      <EmploymentTaxReturnsFiled>1</EmploymentTaxReturnsFiled>
      <UnrelatedBusinessIncome>0</UnrelatedBusinessIncome>
      <ForeignFinancialAccount>0</ForeignFinancialAccount>
      <ProhibitedTaxShelterTrans>0</ProhibitedTaxShelterTrans>
      <TaxablePartyNotification>0</TaxablePartyNotification>
      <NonDeductibleContributions>0</NonDeductibleContributions>
      <QuidProQuoContributions>0</QuidProQuoContributions>
      <Form8282PropertyDisposedOf>0</Form8282PropertyDisposedOf>
      <FundsToPayPremiums>0</FundsToPayPremiums>
      <PremiumsPaid>0</PremiumsPaid>
      <IndoorTanningServices>0</IndoorTanningServices>
      <InfoInScheduleOPartVI>X</InfoInScheduleOPartVI>
      <NbrVotingGoverningBodyMembers>9</NbrVotingGoverningBodyMembers>
      <NumberIndependentVotingMembers>9</NumberIndependentVotingMembers>
      <FamilyOrBusinessRelationship>0</FamilyOrBusinessRelationship>
      <DelegationOfManagementDuties>0</DelegationOfManagementDuties>
      <ChangesToOrganizingDocs>0</ChangesToOrganizingDocs>
      <MaterialDiversionOrMisuse>0</MaterialDiversionOrMisuse>
      <MembersOrStockholders>0</MembersOrStockholders>
      <ElectionOfBoardMembers>0</ElectionOfBoardMembers>
      <DecisionsSubjectToApproval>0</DecisionsSubjectToApproval>
      <MinutesOfGoverningBody>1</MinutesOfGoverningBody>
      <MinutesOfCommittees>0</MinutesOfCommittees>
      <OfficerMailingAddress>0</OfficerMailingAddress>
      <LocalChapters>0</LocalChapters>
      <Form990ProvidedToGoverningBody>1</Form990ProvidedToGoverningBody>
      <ConflictOfInterestPolicy>1</ConflictOfInterestPolicy>
      <AnnualDisclosureCoveredPersons>1</AnnualDisclosureCoveredPersons>
      <RegularMonitoringEnforcement>1</RegularMonitoringEnforcement>
      <WhistleblowerPolicy>1</WhistleblowerPolicy>
      <DocumentRetentionPolicy>1</DocumentRetentionPolicy>
      <CompensationProcessCEO>1</CompensationProcessCEO>
      <CompensationProcessOther>0</CompensationProcessOther>
      <InvestmentInJointVenture>0</InvestmentInJointVenture>
      <OtherWebsite>X</OtherWebsite>
      <UponRequest>X</UponRequest>
      <TheBooksAreInCareOf>
        <NameBusiness>
          <BusinessNameLine1>Organization</BusinessNameLine1>
        </NameBusiness>
        <TelephoneNumber>7033792480</TelephoneNumber>
        <AddressUS>
          <AddressLine1>4220 King Street</AddressLine1>
          <City>Alexandria</City>
          <State>VA</State>
          <ZIPCode>22302</ZIPCode>
        </AddressUS>
      </TheBooksAreInCareOf>
      <Form990PartVIISectionA>
        <NamePerson>Dr Colin P North</NamePerson>
        <Title>Chair</Title>
        <AverageHoursPerWeek>1.00</AverageHoursPerWeek>
        <IndividualTrusteeOrDirector>X</IndividualTrusteeOrDirector>
        <Officer>X</Officer>
        <ReportableCompFromOrganization>0</ReportableCompFromOrganization>
        <ReportableCompFromRelatedOrgs>0</ReportableCompFromRelatedOrgs>
        <OtherCompensation>0</OtherCompensation>
      </Form990PartVIISectionA>
      <Form990PartVIISectionA>
        <NamePerson>Neal Marriott</NamePerson>
        <Title>Vice Chair</Title>
        <AverageHoursPerWeek>1.00</AverageHoursPerWeek>
        <IndividualTrusteeOrDirector>X</IndividualTrusteeOrDirector>
        <Officer>X</Officer>
        <ReportableCompFromOrganization>0</ReportableCompFromOrganization>
        <ReportableCompFromRelatedOrgs>0</ReportableCompFromRelatedOrgs>
        <OtherCompensation>0</OtherCompensation>
      </Form990PartVIISectionA>
      <Form990PartVIISectionA>
        <NamePerson>James Blankenship</NamePerson>
        <Title>Treasurer</Title>
        <AverageHoursPerWeek>1.00</AverageHoursPerWeek>
        <IndividualTrusteeOrDirector>X</IndividualTrusteeOrDirector>
        <Officer>X</Officer>
        <ReportableCompFromOrganization>0</ReportableCompFromOrganization>
        <ReportableCompFromRelatedOrgs>0</ReportableCompFromRelatedOrgs>
        <OtherCompensation>0</OtherCompensation>
      </Form990PartVIISectionA>
      <Form990PartVIISectionA>
        <NamePerson>Robbie Gries</NamePerson>
        <Title>Secretary</Title>
        <AverageHoursPerWeek>1.00</AverageHoursPerWeek>
        <IndividualTrusteeOrDirector>X</IndividualTrusteeOrDirector>
        <Officer>X</Officer>
        <ReportableCompFromOrganization>0</ReportableCompFromOrganization>
        <ReportableCompFromRelatedOrgs>0</ReportableCompFromRelatedOrgs>
        <OtherCompensation>0</OtherCompensation>
      </Form990PartVIISectionA>
      <Form990PartVIISectionA>
        <NamePerson>Steve Wojtal</NamePerson>
        <Title>Member</Title>
        <AverageHoursPerWeek>1.00</AverageHoursPerWeek>
        <IndividualTrusteeOrDirector>X</IndividualTrusteeOrDirector>
        <ReportableCompFromOrganization>0</ReportableCompFromOrganization>
        <ReportableCompFromRelatedOrgs>0</ReportableCompFromRelatedOrgs>
        <OtherCompensation>0</OtherCompensation>
      </Form990PartVIISectionA>
      <Form990PartVIISectionA>
        <NamePerson>Lisa Dunn</NamePerson>
        <Title>Member</Title>
        <AverageHoursPerWeek>1.00</AverageHoursPerWeek>
        <IndividualTrusteeOrDirector>X</IndividualTrusteeOrDirector>
        <ReportableCompFromOrganization>0</ReportableCompFromOrganization>
        <ReportableCompFromRelatedOrgs>0</ReportableCompFromRelatedOrgs>
        <OtherCompensation>0</OtherCompensation>
      </Form990PartVIISectionA>
      <Form990PartVIISectionA>
        <NamePerson>Susan Newman</NamePerson>
        <Title>Member</Title>
        <AverageHoursPerWeek>1.00</AverageHoursPerWeek>
        <IndividualTrusteeOrDirector>X</IndividualTrusteeOrDirector>
        <ReportableCompFromOrganization>0</ReportableCompFromOrganization>
        <ReportableCompFromRelatedOrgs>0</ReportableCompFromRelatedOrgs>
        <OtherCompensation>0</OtherCompensation>
      </Form990PartVIISectionA>
      <Form990PartVIISectionA>
        <NamePerson>P Patrick Leahy</NamePerson>
        <Title>Member</Title>
        <AverageHoursPerWeek>1.00</AverageHoursPerWeek>
        <IndividualTrusteeOrDirector>X</IndividualTrusteeOrDirector>
        <ReportableCompFromOrganization>0</ReportableCompFromOrganization>
        <ReportableCompFromRelatedOrgs>0</ReportableCompFromRelatedOrgs>
        <OtherCompensation>0</OtherCompensation>
      </Form990PartVIISectionA>
      <Form990PartVIISectionA>
        <NamePerson>Doug Rumble</NamePerson>
        <Title>Member</Title>
        <AverageHoursPerWeek>1.00</AverageHoursPerWeek>
        <IndividualTrusteeOrDirector>X</IndividualTrusteeOrDirector>
        <ReportableCompFromOrganization>0</ReportableCompFromOrganization>
        <ReportableCompFromRelatedOrgs>0</ReportableCompFromRelatedOrgs>
        <OtherCompensation>0</OtherCompensation>
      </Form990PartVIISectionA>
      <Form990PartVIISectionA>
        <NamePerson>Don Hemenway</NamePerson>
        <Title>Executive Director</Title>
        <AverageHoursPerWeek>40.00</AverageHoursPerWeek>
        <Officer>X</Officer>
        <ReportableCompFromOrganization>166818</ReportableCompFromOrganization>
        <ReportableCompFromRelatedOrgs>0</ReportableCompFromRelatedOrgs>
        <OtherCompensation>12511</OtherCompensation>
      </Form990PartVIISectionA>
      <TotalReportableCompFromOrg>166818</TotalReportableCompFromOrg>
      <TotalReportableCompFrmRltdOrgs>0</TotalReportableCompFrmRltdOrgs>
      <TotalOtherCompensation>12511</TotalOtherCompensation>
      <NumberIndividualsGT100K>1</NumberIndividualsGT100K>
      <FormersListed>0</FormersListed>
      <TotalCompGT150K>1</TotalCompGT150K>
      <CompensationFromOtherSources>0</CompensationFromOtherSources>
      <NumberOfContractorsGT100K>0</NumberOfContractorsGT100K>
      <ProgramServiceRevenue>
        <Description>Royalties</Description>
        <BusinessCode>519100</BusinessCode>
        <TotalRevenueColumn>3624845</TotalRevenueColumn>
        <RelatedOrExemptFunctionIncome>3624845</RelatedOrExemptFunctionIncome>
      </ProgramServiceRevenue>
      <ProgramServiceRevenue>
        <Description>Publishers' fees</Description>
        <BusinessCode>519100</BusinessCode>
        <TotalRevenueColumn>144753</TotalRevenueColumn>
        <RelatedOrExemptFunctionIncome>144753</RelatedOrExemptFunctionIncome>
      </ProgramServiceRevenue>
      <ProgramServiceRevenue>
        <Description>Publication Sales</Description>
        <BusinessCode>519100</BusinessCode>
        <TotalRevenueColumn>28700</TotalRevenueColumn>
        <RelatedOrExemptFunctionIncome>28700</RelatedOrExemptFunctionIncome>
      </ProgramServiceRevenue>
      <ProgramServiceRevenue>
        <Description>Subscriptions</Description>
        <BusinessCode>519100</BusinessCode>
        <TotalRevenueColumn>1843</TotalRevenueColumn>
        <RelatedOrExemptFunctionIncome>1843</RelatedOrExemptFunctionIncome>
      </ProgramServiceRevenue>
      <TotalProgramServiceRevenue>3800141</TotalProgramServiceRevenue>
      <InvestmentIncome>
        <TotalRevenueColumn>7061</TotalRevenueColumn>
        <ExclusionAmount>7061</ExclusionAmount>
      </InvestmentIncome>
      <TotalRevenue>
        <TotalRevenueColumn>3807202</TotalRevenueColumn>
        <RelatedOrExemptFunctionIncome>3800141</RelatedOrExemptFunctionIncome>
        <UnrelatedBusinessRevenue>0</UnrelatedBusinessRevenue>
        <ExclusionAmount>7061</ExclusionAmount>
      </TotalRevenue>
      <CompCurrentOfficersDirectors>
        <Total>174925</Total>
        <ProgramServices>148335</ProgramServices>
        <ManagementAndGeneral>26590</ManagementAndGeneral>
      </CompCurrentOfficersDirectors>
      <OtherSalariesAndWages>
        <Total>102915</Total>
        <ProgramServices>87270</ProgramServices>
        <ManagementAndGeneral>15645</ManagementAndGeneral>
      </OtherSalariesAndWages>
      <PensionPlanContributions>
        <Total>3670</Total>
        <ProgramServices>3112</ProgramServices>
        <ManagementAndGeneral>558</ManagementAndGeneral>
      </PensionPlanContributions>
      <OtherEmployeeBenefits>
        <Total>10007</Total>
        <ProgramServices>8485</ProgramServices>
        <ManagementAndGeneral>1522</ManagementAndGeneral>
      </OtherEmployeeBenefits>
      <PayrollTaxes>
        <Total>16524</Total>
        <ProgramServices>14012</ProgramServices>
        <ManagementAndGeneral>2512</ManagementAndGeneral>
      </PayrollTaxes>
      <FeesForServicesLegal>
        <Total>4410</Total>
        <ProgramServices>4410</ProgramServices>
      </FeesForServicesLegal>
      <FeesForServicesAccounting>
        <Total>4500</Total>
        <ProgramServices>4500</ProgramServices>
      </FeesForServicesAccounting>
      <FeesForServicesOther>
        <Total>12900</Total>
        <ProgramServices>12900</ProgramServices>
      </FeesForServicesOther>
      <Advertising>
        <Total>11231</Total>
        <ProgramServices>11231</ProgramServices>
      </Advertising>
      <OfficeExpenses>
        <Total>41433</Total>
        <ProgramServices>13811</ProgramServices>
        <ManagementAndGeneral>27622</ManagementAndGeneral>
      </OfficeExpenses>
      <Travel>
        <Total>23819</Total>
        <ProgramServices>20199</ProgramServices>
        <ManagementAndGeneral>3620</ManagementAndGeneral>
      </Travel>
      <ConferencesMeetings>
        <Total>24711</Total>
        <ProgramServices>24711</ProgramServices>
      </ConferencesMeetings>
      <Interest>
        <Total>93</Total>
        <ProgramServices>93</ProgramServices>
      </Interest>
      <Insurance>
        <Total>18641</Total>
        <ProgramServices>15808</ProgramServices>
        <ManagementAndGeneral>2833</ManagementAndGeneral>
      </Insurance>
      <OtherExpenses>
        <Description>Publisher royalties</Description>
        <Total>2525215</Total>
        <ProgramServices>2525215</ProgramServices>
      </OtherExpenses>
      <OtherExpenses>
        <Description>Computer services</Description>
        <Total>681271</Total>
        <ProgramServices>681271</ProgramServices>
      </OtherExpenses>
      <OtherExpenses>
        <Description>Telephone</Description>
        <Total>4777</Total>
        <ProgramServices>4051</ProgramServices>
        <ManagementAndGeneral>726</ManagementAndGeneral>
      </OtherExpenses>
      <OtherExpenses>
        <Description>Miscellaneous</Description>
        <Total>4349</Total>
        <ProgramServices>3688</ProgramServices>
        <ManagementAndGeneral>661</ManagementAndGeneral>
      </OtherExpenses>
      <OtherExpenses>
        <Description>Supplies</Description>
        <Total>3435</Total>
        <ProgramServices>2913</ProgramServices>
        <ManagementAndGeneral>522</ManagementAndGeneral>
      </OtherExpenses>
      <AllOtherExpenses>
        <Total>5675</Total>
        <ProgramServices>5233</ProgramServices>
        <ManagementAndGeneral>442</ManagementAndGeneral>
      </AllOtherExpenses>
      <TotalFunctionalExpenses>
        <Total>3674501</Total>
        <ProgramServices>3591248</ProgramServices>
        <ManagementAndGeneral>83253</ManagementAndGeneral>
        <Fundraising>0</Fundraising>
      </TotalFunctionalExpenses>
      <CashNonInterestBearing>
        <BOY>396603</BOY>
        <EOY>517234</EOY>
      </CashNonInterestBearing>
      <SavingsAndTempCashInvestments>
        <BOY>234816</BOY>
        <EOY>310798</EOY>
      </SavingsAndTempCashInvestments>
      <AccountsReceivable>
        <BOY>392634</BOY>
        <EOY>479641</EOY>
      </AccountsReceivable>
      <PrepaidExpensesDeferredCharges>
        <BOY>17214</BOY>
        <EOY>14369</EOY>
      </PrepaidExpensesDeferredCharges>
      <InvestmentsOtherSecurities>
        <BOY>460000</BOY>
        <EOY>231049</EOY>
      </InvestmentsOtherSecurities>
      <TotalAssets>
        <BOY>1501267</BOY>
        <EOY>1553091</EOY>
      </TotalAssets>
      <AccountsPayableAccruedExpenses>
        <BOY>1034844</BOY>
        <EOY>953896</EOY>
      </AccountsPayableAccruedExpenses>
      <DeferredRevenue>
        <BOY>1768</BOY>
        <EOY>1839</EOY>
      </DeferredRevenue>
      <TotalLiabilities>
        <BOY>1036612</BOY>
        <EOY>955735</EOY>
      </TotalLiabilities>
      <FollowSFAS117>X</FollowSFAS117>
      <UnrestrictedNetAssets>
        <BOY>464655</BOY>
        <EOY>597356</EOY>
      </UnrestrictedNetAssets>
      <TotalNetAssetsFundBalances>
        <BOY>464655</BOY>
        <EOY>597356</EOY>
      </TotalNetAssetsFundBalances>
      <TotalLiabNetAssetsFundBalances>
        <BOY>1501267</BOY>
        <EOY>1553091</EOY>
      </TotalLiabNetAssetsFundBalances>
      <ReconcilationRevenueExpenses>132701</ReconcilationRevenueExpenses>
      <ReconcilationOtherChanges>0</ReconcilationOtherChanges>
      <InfoInScheduleOPartXII>X</InfoInScheduleOPartXII>
      <MethodOfAccountingAccrual>X</MethodOfAccountingAccrual>
      <AccountantCompileOrReview>0</AccountantCompileOrReview>
      <FSAudited>1</FSAudited>
      <AuditCommittee>1</AuditCommittee>
      <FinancialStatementSeparate>X</FinancialStatementSeparate>
      <FederalGrantAuditRequired>0</FederalGrantAuditRequired>
    </IRS990>
    <IRS990ScheduleA documentId="RetDoc1039100001">
      <PubliclySupportedOrg509a2>X</PubliclySupportedOrg509a2>
      <GiftsGrantsContribReceived509>
        <CurrentTaxYearMinus4Years>23233</CurrentTaxYearMinus4Years>
        <CurrentTaxYearMinus3Years>2501</CurrentTaxYearMinus3Years>
        <Total>25734</Total>
      </GiftsGrantsContribReceived509>
      <GrossReceiptsFromAdmissions>
        <CurrentTaxYearMinus4Years>1917264</CurrentTaxYearMinus4Years>
        <CurrentTaxYearMinus3Years>2517191</CurrentTaxYearMinus3Years>
        <CurrentTaxYearMinus2Years>2929270</CurrentTaxYearMinus2Years>
        <CurrentTaxYearMinus1Year>3292388</CurrentTaxYearMinus1Year>
        <CurrentTaxYear>3800141</CurrentTaxYear>
        <Total>14456254</Total>
      </GrossReceiptsFromAdmissions>
      <Total509>
        <CurrentTaxYearMinus4Years>1940497</CurrentTaxYearMinus4Years>
        <CurrentTaxYearMinus3Years>2519692</CurrentTaxYearMinus3Years>
        <CurrentTaxYearMinus2Years>2929270</CurrentTaxYearMinus2Years>
        <CurrentTaxYearMinus1Year>3292388</CurrentTaxYearMinus1Year>
        <CurrentTaxYear>3800141</CurrentTaxYear>
        <Total>14481988</Total>
      </Total509>
      <AmtsRecdFromDisqualPersons>
        <Total>0</Total>
      </AmtsRecdFromDisqualPersons>
      <AmtsFromSubstContributors>
        <Total>0</Total>
      </AmtsFromSubstContributors>
      <SupportFromDQPsEtc>
        <Total>0</Total>
      </SupportFromDQPsEtc>
      <PublicSupportTotal509>14481988</PublicSupportTotal509>
      <GrossInvestmentIncome509>
        <CurrentTaxYearMinus4Years>15644</CurrentTaxYearMinus4Years>
        <CurrentTaxYearMinus3Years>9635</CurrentTaxYearMinus3Years>
        <CurrentTaxYearMinus2Years>9820</CurrentTaxYearMinus2Years>
        <CurrentTaxYearMinus1Year>5099</CurrentTaxYearMinus1Year>
        <CurrentTaxYear>7061</CurrentTaxYear>
        <Total>47259</Total>
      </GrossInvestmentIncome509>
      <InvestmentIncomeAndUBTI>
        <CurrentTaxYearMinus4Years>15644</CurrentTaxYearMinus4Years>
        <CurrentTaxYearMinus3Years>9635</CurrentTaxYearMinus3Years>
        <CurrentTaxYearMinus2Years>9820</CurrentTaxYearMinus2Years>
        <CurrentTaxYearMinus1Year>5099</CurrentTaxYearMinus1Year>
        <CurrentTaxYear>7061</CurrentTaxYear>
        <Total>47259</Total>
      </InvestmentIncomeAndUBTI>
      <TotalSupportTotal>
        <CurrentTaxYearMinus4Years>1956141</CurrentTaxYearMinus4Years>
        <CurrentTaxYearMinus3Years>2529327</CurrentTaxYearMinus3Years>
        <CurrentTaxYearMinus2Years>2939090</CurrentTaxYearMinus2Years>
        <CurrentTaxYearMinus1Year>3297487</CurrentTaxYearMinus1Year>
        <CurrentTaxYear>3807202</CurrentTaxYear>
        <Total>14529247</Total>
      </TotalSupportTotal>
      <PublicSupportPercentage509>0.99670</PublicSupportPercentage509>
      <PriorYearSupportPercentage>0.99660</PriorYearSupportPercentage>
      <InvestmentIncomePercentage>0.00330</InvestmentIncomePercentage>
      <PriorYrInvestIncomePercentage>0.00340</PriorYrInvestIncomePercentage>
      <ThirtyThreePercntTestsCY509>X</ThirtyThreePercntTestsCY509>
    </IRS990ScheduleA>
    <IRS990ScheduleD documentId="RetDoc1040000001">
      <TotalOfBookValueLandBuildings>0</TotalOfBookValueLandBuildings>
      <OtherSecurities>
        <Description>Certificates of Deposit</Description>
        <BookValue>231049</BookValue>
        <MethodOfValuation>C</MethodOfValuation>
      </OtherSecurities>
      <TotalOfBookValueSecurities>231049</TotalOfBookValueSecurities>
      <TotalRevenue>3807202</TotalRevenue>
      <TotalExpenses>3674501</TotalExpenses>
      <ExcessOrDeficitForYear>132701</ExcessOrDeficitForYear>
      <TotalAdjustments>0</TotalAdjustments>
      <ExcessOrDeficitPerFS>132701</ExcessOrDeficitPerFS>
      <TotRevenueEtcAuditedFinclStmt>3807202</TotRevenueEtcAuditedFinclStmt>
      <RevenueNotRptdF990>0</RevenueNotRptdF990>
      <RevenueSubtotal>3807202</RevenueSubtotal>
      <RevenueNotRptdOnFinStmt>0</RevenueNotRptdOnFinStmt>
      <TotalRevenuePerForm990>3807202</TotalRevenuePerForm990>
      <TotExpensesEtcAuditedFinclStmt>3674501</TotExpensesEtcAuditedFinclStmt>
      <ExpensesNotRptdF990>0</ExpensesNotRptdF990>
      <ExpensesSubtotal>3674501</ExpensesSubtotal>
      <ExpensesNotRptdOnFinStmt>0</ExpensesNotRptdOnFinStmt>
      <TotalExpensesPerForm990>3674501</TotalExpensesPerForm990>
      <Form990ScheduleDPartXIV>
        <Identifier>Description of Uncertain Tax Positions Under FIN 48:</Identifier>
        <ReturnReference>Part X:</ReturnReference>
        <Explanation>The following was disclosed related to uncertain tax positions in the financial statements. GeoScience World is exempt from income taxes under section 501(c)(3) of the Internal Revenue code and is classified as an organization other than a private foundation under 509(a) of the Internal Revenue Code. GeoScience World adopted the provisions in FASB ASB 740-10.</Explanation>
      </Form990ScheduleDPartXIV>
    </IRS990ScheduleD>
    <IRS990ScheduleJ documentId="RetDoc1042400001">
      <BoardOrCommitteeApproval>X</BoardOrCommitteeApproval>
      <SeverancePayment>0</SeverancePayment>
      <SupplementalNonqualRetirePlan>0</SupplementalNonqualRetirePlan>
      <EquityBasedCompArrangement>0</EquityBasedCompArrangement>
      <CompBasedOnRevenueOfFilingOrg>0</CompBasedOnRevenueOfFilingOrg>
      <CompBasedOnRevenueRelatedOrgs>0</CompBasedOnRevenueRelatedOrgs>
      <CompBasedNetEarningsFilingOrg>0</CompBasedNetEarningsFilingOrg>
      <CompBasedNetEarningsRelateOrgs>0</CompBasedNetEarningsRelateOrgs>
      <AnyNonFixedPayments>1</AnyNonFixedPayments>
      <InitialContractException>0</InitialContractException>
      <Form990ScheduleJPartII>
        <NamePerson>Don Hemenway</NamePerson>
        <BaseCompensationFilingOrg>162818</BaseCompensationFilingOrg>
        <CompBasedOnRelatedOrgs>0</CompBasedOnRelatedOrgs>
        <BonusFilingOrg>4000</BonusFilingOrg>
        <BonusRelatedOrgs>0</BonusRelatedOrgs>
        <OtherCompensationFilingOrg>0</OtherCompensationFilingOrg>
        <OtherCompensationRelatedOrgs>0</OtherCompensationRelatedOrgs>
        <DeferredCompFilingOrg>12511</DeferredCompFilingOrg>
        <DeferredCompRelatedOrgs>0</DeferredCompRelatedOrgs>
        <NontaxableBenefitsFilingOrg>0</NontaxableBenefitsFilingOrg>
        <NontaxableBenefitsRelatedOrgs>0</NontaxableBenefitsRelatedOrgs>
        <TotalCompensationFilingOrg>179329</TotalCompensationFilingOrg>
        <TotalCompensationRelatedOrgs>0</TotalCompensationRelatedOrgs>
        <CompReportPrior990FilingOrg>0</CompReportPrior990FilingOrg>
        <CompReportPrior990RelatedOrgs>0</CompReportPrior990RelatedOrgs>
      </Form990ScheduleJPartII>
      <Form990ScheduleJPartIII>
        <ReturnReference>Part I, Line 7</ReturnReference>
        <Explanation>An annual bonus may be paid to the executive director based on performance at the discretion of the board of directors.</Explanation>
      </Form990ScheduleJPartIII>
    </IRS990ScheduleJ>
    <IRS990ScheduleO documentId="RetDoc1044400001">
      <GeneralExplanation>
        <Identifier>Form 990, Part VI, Section A, line 8b</Identifier>
        <Explanation>No such committees exist.</Explanation>
      </GeneralExplanation>
      <GeneralExplanation>
        <Identifier>Form 990, Part VI, Section B, line 11</Identifier>
        <Explanation>Prior to filing, Form 990 is distributed to the board and discussed at a board meeting.</Explanation>
      </GeneralExplanation>
      <GeneralExplanation>
        <ReturnReference>Form 990, Part VI, Section B, line 12c</ReturnReference>
        <Explanation>Copies of completed disclosure forms are distributed to the Board of Directors. The Board decides what action to take, if any, related to each disclosed conflict of interest.</Explanation>
      </GeneralExplanation>
      <GeneralExplanation>
        <ReturnReference>Form 990, Part VI, Section B, line 15a</ReturnReference>
        <Explanation>Independent board members review comparability data and document their approval of the compensation of the Executive Director.</Explanation>
      </GeneralExplanation>
      <GeneralExplanation>
        <ReturnReference>Form 990, Part VI, Section C, line 19</ReturnReference>
        <Explanation>The governing documents, conflict of interest policy and financial statements are available to the public upon request.</Explanation>
      </GeneralExplanation>
      <GeneralExplanation>
        <Identifier>Policy for board review of financial statements</Identifier>
        <ReturnReference>Form 990, Part XII, Line 2C</ReturnReference>
        <Explanation>Financial statements are distributed to the board members on a regular basis. Audited financial statements are discussed at a board meeting.</Explanation>
      </GeneralExplanation>
    </IRS990ScheduleO>
  </ReturnData>
</Return>