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        <EOY>33619</EOY>
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        <EOY>3576946</EOY>
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      <FollowSFAS117>X</FollowSFAS117>
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        <BOY>2308446</BOY>
        <EOY>2945305</EOY>
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      <TemporarilyRestrictedNetAssets>
        <BOY>180000</BOY>
        <EOY>24500</EOY>
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      <TotalNetAssetsFundBalances>
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        <EOY>2969805</EOY>
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      <TotalLiabNetAssetsFundBalances>
        <BOY>3303225</BOY>
        <EOY>3576946</EOY>
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      <ReconcilationRevenueExpenses>481359</ReconcilationRevenueExpenses>
      <ReconcilationOtherChanges>0</ReconcilationOtherChanges>
      <InfoInScheduleOPartXII>X</InfoInScheduleOPartXII>
      <MethodOfAccountingAccrual>X</MethodOfAccountingAccrual>
      <AccountantCompileOrReview>0</AccountantCompileOrReview>
      <FSAudited>1</FSAudited>
      <AuditCommittee>1</AuditCommittee>
      <FinancialStatementSeparate>X</FinancialStatementSeparate>
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    <IRS990ScheduleA documentId="RetDoc1039100001">
      <PubliclySupportedOrg170b1Avi>X</PubliclySupportedOrg170b1Avi>
      <GiftsGrantsContribReceived170>
        <CurrentTaxYearMinus4Years>1795000</CurrentTaxYearMinus4Years>
        <CurrentTaxYearMinus3Years>3027696</CurrentTaxYearMinus3Years>
        <CurrentTaxYearMinus2Years>4345254</CurrentTaxYearMinus2Years>
        <CurrentTaxYearMinus1Year>4542054</CurrentTaxYearMinus1Year>
        <CurrentTaxYear>4527683</CurrentTaxYear>
        <Total>18237687</Total>
      </GiftsGrantsContribReceived170>
      <Total170>
        <CurrentTaxYearMinus4Years>1795000</CurrentTaxYearMinus4Years>
        <CurrentTaxYearMinus3Years>3027696</CurrentTaxYearMinus3Years>
        <CurrentTaxYearMinus2Years>4345254</CurrentTaxYearMinus2Years>
        <CurrentTaxYearMinus1Year>4542054</CurrentTaxYearMinus1Year>
        <CurrentTaxYear>4527683</CurrentTaxYear>
        <Total>18237687</Total>
      </Total170>
      <AmountsSubstContributorsTotal>12762120</AmountsSubstContributorsTotal>
      <PublicSupportTotal170>5475567</PublicSupportTotal170>
      <GrossInvestmentIncome170>
        <CurrentTaxYearMinus4Years>37</CurrentTaxYearMinus4Years>
        <CurrentTaxYearMinus3Years>15053</CurrentTaxYearMinus3Years>
        <CurrentTaxYearMinus2Years>10153</CurrentTaxYearMinus2Years>
        <CurrentTaxYearMinus1Year>3361</CurrentTaxYearMinus1Year>
        <CurrentTaxYear>10788</CurrentTaxYear>
        <Total>39392</Total>
      </GrossInvestmentIncome170>
      <OtherIncome170>
        <CurrentTaxYear>1735</CurrentTaxYear>
        <Total>1735</Total>
      </OtherIncome170>
      <TotalSupport>18278814</TotalSupport>
      <GrossReceiptsFromAdmissionsEtc>209626</GrossReceiptsFromAdmissionsEtc>
      <First5Years170>X</First5Years170>
    </IRS990ScheduleA>
    <IRS990ScheduleB documentId="RetDoc1234500001">
      <ContributorInfo>
        <ContributorNumber>RESTRICTED</ContributorNumber>
        <ContributorNameBusiness>
          <BusinessNameLine1>RESTRICTED</BusinessNameLine1>
        </ContributorNameBusiness>
        <ContributorAddressUS>
          <AddressLine1>RESTRICTED</AddressLine1>
          <AddressLine2>RESTRICTED</AddressLine2>
          <City>RESTRICTED</City>
          <State>RESTRICTED</State>
          <ZIPCode>RESTRICTED</ZIPCode>
        </ContributorAddressUS>
        <AggregateContributions>RESTRICTED</AggregateContributions>
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    <IRS990ScheduleD documentId="RetDoc1040000001">
      <LeaseholdImprovements>
        <OtherCostOrOtherBasis>382205</OtherCostOrOtherBasis>
        <Depreciation>19110</Depreciation>
        <BookValue>363095</BookValue>
      </LeaseholdImprovements>
      <Equipment>
        <OtherCostOrOtherBasis>127999</OtherCostOrOtherBasis>
        <Depreciation>38207</Depreciation>
        <BookValue>89792</BookValue>
      </Equipment>
      <OtherLandBuildings>
        <OtherCostOrOtherBasis>14500</OtherCostOrOtherBasis>
        <Depreciation>4714</Depreciation>
        <BookValue>9786</BookValue>
      </OtherLandBuildings>
      <TotalOfBookValueLandBuildings>462673</TotalOfBookValueLandBuildings>
      <TotalRevenue>4519312</TotalRevenue>
      <TotalExpenses>4037953</TotalExpenses>
      <ExcessOrDeficitForYear>481359</ExcessOrDeficitForYear>
      <TotalAdjustments>0</TotalAdjustments>
      <ExcessOrDeficitPerFS>481359</ExcessOrDeficitPerFS>
      <TotRevenueEtcAuditedFinclStmt>5622269</TotRevenueEtcAuditedFinclStmt>
      <DonatedSrvcAndUseOfFacilities>822722</DonatedSrvcAndUseOfFacilities>
      <RevenueNotRptdF990>822722</RevenueNotRptdF990>
      <RevenueSubtotal>4799547</RevenueSubtotal>
      <OtherRevenuesNotIncluded>-280235</OtherRevenuesNotIncluded>
      <RevenueNotRptdOnFinStmt>-280235</RevenueNotRptdOnFinStmt>
      <TotalRevenuePerForm990>4519312</TotalRevenuePerForm990>
      <TotExpensesEtcAuditedFinclStmt>5140910</TotExpensesEtcAuditedFinclStmt>
      <DonatedServicesUseOfFacilities>822722</DonatedServicesUseOfFacilities>
      <OtherExpensesIncluded>280235</OtherExpensesIncluded>
      <ExpensesNotRptdF990>1102957</ExpensesNotRptdF990>
      <ExpensesSubtotal>4037953</ExpensesSubtotal>
      <ExpensesNotRptdOnFinStmt>0</ExpensesNotRptdOnFinStmt>
      <TotalExpensesPerForm990>4037953</TotalExpensesPerForm990>
      <Form990ScheduleDPartXIV>
        <Identifier>DESCRIPTION OF UNCERTAIN TAX POSITIONS UNDER FIN 48:</Identifier>
        <ReturnReference>PART X:</ReturnReference>
        <Explanation>THE FOUNDATION ACCOUNTS FOR UNCERTAINTY IN INCOME TAXES RECOGNIZED IN THE FINANCIAL STATEMENTS USING A RECOGNITION THRESHOLD OF MORE LIKELY THAN NOT AS TO WHETHER THE UNCERTAINTY WILL BE SUSTAINED UPON EXAMINATION BY THE APPROPRIATE TAXING AUTHORITY. MEASUREMENT OF THE TAX UNCERTAINTY OCCURS IF THE RECOGNITION THRESHOLD HAS BEEN MET. MANAGEMENT DETERMINED THERE WERE NO TAX UNCERTAINTIES THAT MET THE RECOGNITION THRESHOLD.</Explanation>
      </Form990ScheduleDPartXIV>
      <Form990ScheduleDPartXIV>
        <Identifier>PART XII, LINE 4B - OTHER ADJUSTMENTS:</Identifier>
        <Explanation>FUNDRAISING DIRECT COSTS INCLUDED IN EXPENSES IN AUDITED FINANCIAL STATEMENT -280,235.</Explanation>
      </Form990ScheduleDPartXIV>
      <Form990ScheduleDPartXIV>
        <Identifier>PART XIII, LINE 2D - OTHER ADJUSTMENTS:</Identifier>
        <Explanation>FUNRAISING DIRECT COSTS REPORTED ON LINE 8B, OF PART VIII 280,235.</Explanation>
      </Form990ScheduleDPartXIV>
    </IRS990ScheduleD>
    <IRS990ScheduleG documentId="RetDoc1041300001">
      <EventsInformation>
        <NameOfEvent1>OPENING NIGHT GALA</NameOfEvent1>
        <GrossReceiptsEvent1>543050</GrossReceiptsEvent1>
        <CharitableContributionsEvent1>493335</CharitableContributionsEvent1>
        <GrossRevenueEvent1>49715</GrossRevenueEvent1>
        <RentFacilityCostsEvent1>89038</RentFacilityCostsEvent1>
        <OtherDirectExpensesEvent1>191197</OtherDirectExpensesEvent1>
        <GrossReceiptsTotal>543050</GrossReceiptsTotal>
        <CharitableContributionsTotal>493335</CharitableContributionsTotal>
        <GrossRevenueTotalEvents>49715</GrossRevenueTotalEvents>
        <RentFacilityCostsTotalEvents>89038</RentFacilityCostsTotalEvents>
        <OtherDirectExpensesTotalEvents>191197</OtherDirectExpensesTotalEvents>
        <DirectExpenseSummaryEvents>280235</DirectExpenseSummaryEvents>
        <NetIncomeSummary>-230520</NetIncomeSummary>
      </EventsInformation>
    </IRS990ScheduleG>
    <IRS990ScheduleJ documentId="RetDoc1042400001">
      <Form990OfOtherOrganizations>X</Form990OfOtherOrganizations>
      <CompensationSurvey>X</CompensationSurvey>
      <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>0</AnyNonFixedPayments>
      <InitialContractException>0</InitialContractException>
      <Form990ScheduleJPartII>
        <NamePerson>TRACY DAY</NamePerson>
        <BaseCompensationFilingOrg>230000</BaseCompensationFilingOrg>
        <CompBasedOnRelatedOrgs>0</CompBasedOnRelatedOrgs>
        <BonusFilingOrg>0</BonusFilingOrg>
        <BonusRelatedOrgs>0</BonusRelatedOrgs>
        <OtherCompensationFilingOrg>0</OtherCompensationFilingOrg>
        <OtherCompensationRelatedOrgs>0</OtherCompensationRelatedOrgs>
        <DeferredCompFilingOrg>0</DeferredCompFilingOrg>
        <DeferredCompRelatedOrgs>0</DeferredCompRelatedOrgs>
        <NontaxableBenefitsFilingOrg>0</NontaxableBenefitsFilingOrg>
        <NontaxableBenefitsRelatedOrgs>0</NontaxableBenefitsRelatedOrgs>
        <TotalCompensationFilingOrg>230000</TotalCompensationFilingOrg>
        <TotalCompensationRelatedOrgs>0</TotalCompensationRelatedOrgs>
        <CompReportPrior990FilingOrg>0</CompReportPrior990FilingOrg>
        <CompReportPrior990RelatedOrgs>0</CompReportPrior990RelatedOrgs>
      </Form990ScheduleJPartII>
    </IRS990ScheduleJ>
    <IRS990ScheduleO documentId="RetDoc1044400001">
      <GeneralExplanation>
        <Identifier>FORM 990, PART VI, SECTION A, LINE 2</Identifier>
        <Explanation>BRIAN GREENE, CHAIRMAN OF THE BOARD, IS MARRIED TO TRACY DAY, CEO AND BOARD SECRETARY. BRIAN GREENE, CHAIRMAN OF THE BOARD HAS A BUSINESS RELATIONSHIP WITH LEE BOLLINGER WHO IS A DIRECTOR OF THE SCIENCE FESTIVAL FOUNDATION.</Explanation>
      </GeneralExplanation>
      <GeneralExplanation>
        <Identifier>FORM 990, PART VI, SECTION A, LINE 4</Identifier>
        <Explanation>THE BYLAWS WERE AMENDED TO DEFINE MEMBERS AS DIRECTORS IN OFFICE AS OF 12/12/2010, AND ANYONE ELSE THE MEMBERS MAY ELECT TO MEMBERSHIP BY MAJORITY VOTE. PRIOR TO THE AMENDMENT, ALL DIRECTORS WERE AUTOMATICALLY MEMBERS AND VICE VERSA. ADDITIONAL CHANGES WERE MADE THROUGHOUT THE BYLAWS TO HARMONIZE AND MODERNIZE CERTAIN PROVISIONS.</Explanation>
      </GeneralExplanation>
      <GeneralExplanation>
        <Identifier>FORM 990, PART VI, SECTION A, LINE 8B</Identifier>
        <Explanation>DUE TO THE SIZE OF ITS BOARD, SCIENCE FESTIVAL FOUNDATION DOES NOT HAVE COMMITTEES. ALL MEETINGS OF THE FULL BOARD WERE DOCUMENTED.</Explanation>
      </GeneralExplanation>
      <GeneralExplanation>
        <Identifier>FORM 990, PART VI, SECTION B, LINE 11</Identifier>
        <Explanation>PRIOR TO FILING WITH THE IRS, THE DRAFT 990 IS REVIEWED INTERNALLY BY THE DIRECTOR OF FINANCE, GENERAL COUNSEL AND PRESIDENT OF THE FOUNDATION. THEY DISCUSS ANY QUESTIONS OR COMMENTS WITH THE FOUNDATION'S OUTSIDE PREPARERS, PROVIDE SUGGESTED LANGUAGE WHERE APPROPRIATE AND REVIEW ANY REVISIONS MADE IN RESPONSE TO THEIR COMMENTS. ONCE A FINAL DRAFT IS READY, MANAGEMENT DISTRIBUTES IT TO THE BOARD OF DIRECTORS PRIOR TO FILING WITH THE IRS.</Explanation>
      </GeneralExplanation>
      <GeneralExplanation>
        <ReturnReference>FORM 990, PART VI, SECTION B, LINE 12C</ReturnReference>
        <Explanation>THE FOUNDATION'S GENERAL COUNSEL DISTRIBUTES THE CONFLICT OF INTEREST POLICY AND CONFLICT OF INTEREST QUESTIONNAIRE TO EACH OFFICER, DIRECTOR AND KEY EMPLOYEE ON AN ANNUAL BASIS, AND FOLLOWS UP WITH EACH INDIVIDUAL TO ENSURE THAT THE QUESTIONNAIRE HAS BEEN COMPLETED. EACH OFFICER, DIRECTOR AND KEY EMPLOYEE IS ASKED TO CERTIFY ANNUALLY THAT HE/SHE HAS REVIEWED THE FOUNDATION'S CONFLICT OF INTEREST POLICY AND HAS DISCLOSED ANY POTENTIAL OR ACTUAL CONFLICTS ON THE QUESTIONNAIRE. THE GENERAL COUNSEL REVIEWS THE RESPONSES TO THE QUESTIONNAIRE TO DETERMINE IF THERE IS ANYTHING DISCLOSED THAT SHOULD BE BROUGHT TO THE ATTENTION OF THE BOARD. THE QUESTIONNAIRES ARE MAINTAINED WITH THE BOOKS AND RECORDS OF THE FOUNDATION. IN ADDITION TO FILLING OUT THE QUESTIONNAIRE, PURSUANT TO THE FOUNDATION'S POLICY, EACH OFFICER, DIRECTOR AND KEY EMPLOYEE IS REQUIRED TO ALERT THE OTHER MEMBERS OF THE BOARD IF A TRANSACTION OR FACT ARISES THAT COULD BE COVERED BY THE FOUNDATION'S POLICY AFTER THE INDIVIDUAL HAS COMPLETED HIS OR HER ANNUAL QUESTIONNAIRE.</Explanation>
      </GeneralExplanation>
      <GeneralExplanation>
        <ReturnReference>FORM 990, PART VI, SECTION B, LINE 15</ReturnReference>
        <Explanation>EXECUTIVE AND OFFICER COMPENSATION IS REVIEWED AND APPROVED BY THE BOARD OF DIRECTORS. THE GENERAL COUNSEL, DIRECTOR OF FINANCE AND PRESIDENT REVIEW AND COMPILE PUBLICLY AVAILABLE COMPENSATION INFORMATION FOR SIMILAR POSITIONS AT COMPARABLE ORGANIZATIONS, AS WELL AS COMPENSATION SURVEYS. THIS INFORMATION IS DISTRIBUTED AND DISCUSSED AT A MEETING OF THE BOARD OUT OF THE PRESENCE OF THE INDIVIDUAL WHOSE COMPENSATION IS BEING REVIEWED. AT THAT POINT IN THE MEETING, ANY REMAINING BOARD MEMBERS WHO HAVE AN INTEREST IN THE COMPENSATION (SUCH AS FAMILY MEMBERS OF THE EMPLOYEE OR OFFICER) ARE EXCUSED FROM THE MEETING. THE DISINTERESTED BOARD MEMBERS DETERMINE WHETHER THE PROPOSED COMPENSATION IS REASONABLE IN LIGHT OF THE COMPARABLES REVIEWED AND THE WORK BEING PERFORMED BY THE INDIVIDUAL IN QUESTION, AND VOTE ON THE COMPENSATION PACKAGE. THE DELIBERATION AND VOTE ON COMPENSATION ARE RECORDED IN THE MINUTES OF THE BOARD MEETING, WHICH ARE APPROVED BY THE DIRECTORS AT THE NEXT SCHEDULED BOARD MEETING.</Explanation>
      </GeneralExplanation>
      <GeneralExplanation>
        <ReturnReference>FORM 990, PART VI, SECTION C, LINE 19</ReturnReference>
        <Explanation>THE FOUNDATION MAKES ITS AUDITED FINANCIAL STATEMENTS, CONFLICT OF INTEREST POLICY SECTION C, LINE 19 AND CERTIFICATE OF INCORPORATION AVAILABLE TO THE PUBLIC UPON REQUEST.</Explanation>
      </GeneralExplanation>
      <GeneralExplanation>
        <Identifier>AUDITOR SELECTION AND OVERSIGHT PROCESS</Identifier>
        <ReturnReference>PART XII, LINE 2 C</ReturnReference>
        <Explanation>THE OVERSIGHT PROCESS AND THE SELECTION PROCESS THAT THE ORGANIZATION USES FOR THE OVERSIGHT OF ITS AUDITORS HAS NOT CHANGED FROM THE PRIOR YEAR. OVERSIGHT OF THE AUDIT AND OF THE COMPILATION OF THE FINANCIAL STATEMENTS IS DONE BY THE ENTIRE BOARD OF DIRECTORS.</Explanation>
      </GeneralExplanation>
      <GeneralExplanation>
        <Identifier>TRANSACTION WITH INTERESTED PARTIES</Identifier>
        <ReturnReference>ADDITIONAL INFORMATION FOR PAGE 4, LINE 28A</ReturnReference>
        <Explanation>THE SCIENCE FESTIVAL FOUNDATION(SFF) COLLABORATED WITH THE NON-PROFIT SOUTHBANK CENTRE(LONDON) TO COMMISSION AND PRODUCE AN ORIGINAL MULTI-MEDIA WORK BASED ON A CHILDREN'S BOOK WRITTEN BY BRIAN GREENE, WHO IS THE CHAIRMAN OF THE BOARD OF SFF AND THE SPOUSE OF TRACY DAY, EXECUTIVE DIRECTOR OF SFF. SOUTHBANK CENTRE TOOK THE LEAD IN NEGOTIATING ALL FEES AND ARRANGEMENTS WITH ALL OF THE ARTISTS INVOLVED. MR. GREENE LICENSED THE UNDERLYING RIGHTS TO THE BOOK, AND CO-WROTE THE NARRATION FOR THE WORK. HE WAS PAID BY THE SOUTHBANK CENTRE FOR THE LICENSE AND HIS WORK ON THE NARRATION, AND SFF WAS RESPONSIBLE FOR 50% OF THOSE FEES. IN EACH INSTANCE, SFF'S SHARE OF THE FEES WAS UNDER $10,000. THE SFF BOARD OF DIRECTORS REVIEWED AND APPROVED THE TRANSACTIONS IN ACCORDANCE WITH ITS CONFLICT OF INTEREST POLICY.</Explanation>
      </GeneralExplanation>
      <GeneralExplanation>
        <Identifier>LOSS ON FUNDRAISING EVENT</Identifier>
        <ReturnReference>PART VIII - LINE 8C</ReturnReference>
        <Explanation>IN 2011, THE ORGANIZATION IS SHOWING A NET LOSS FROM THE FUNDRAISING EVENT AS THE FORM 990 HAS EXCLUDED $493,335 OF CONTRIBUTIONS THAT WERE RECEIVED SPECIFICALLY FOR THE FUNDRAISING EVENT. (SEE LINE 8A, PART VIII). THESE CONTRIBUTIONS ARE SHOWN ON LINE 1C, PART VIII. IF THESE CONTRIBUTIONS WERE INCLUDED WITH THE FUNDRAISING REVENUE SHOWN ON LINE 8A, THE NET INCOME FROM THE EVENT WOULD BE $262,815.</Explanation>
      </GeneralExplanation>
      <GeneralExplanation>
        <Identifier>CHIEF EXECUTIVE OFFICER'S COMPENSATION</Identifier>
        <ReturnReference>PART VII SECTION A</ReturnReference>
        <Explanation>THE CHIEF EXECUTIVE OFFICER'S EARNINGS OF $230,000 FOR TRACY K. DAY INCLUDES AN ANNUAL SALARY OF $175,000 PLUS PAYMENT OF $55,000 AS PARTIAL PAYMENT FOR WORK PERFORMED IN 2006 THROUGH 2008 DURING THE FIRST YEARS OF OPERATIONS WHEN MS. DAY WORKED FULL-TIME WITHOUT ANY COMPENSATION. THE BALANCE DUE TO MS. DAY FOR COMPENSATION FOR THE 2006-2008 YEARS WILL BE PAID OUT OVER A FIVE YEAR PERIOD.</Explanation>
      </GeneralExplanation>
    </IRS990ScheduleO>
  </ReturnData>
</Return>