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CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) | 12 Months Ended
--- | ---
Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
Cash flows from operating activities |  |  |
Net Loss | $ (4,006,335)us-gaap_NetIncomeLoss | $ (10,657,009)us-gaap_NetIncomeLoss | $ (13,092,387)us-gaap_NetIncomeLoss
Adjustments to reconcile net loss to net cash used in operating activities: |  |  |
Settlement of litigation and debt | 0 us-gaap_GainsLossesOnExtinguishmentOfDebt | (346)us-gaap_GainsLossesOnExtinguishmentOfDebt | (239,775)us-gaap_GainsLossesOnExtinguishmentOfDebt
Share based compensation expense | 730,726 us-gaap_AllocatedShareBasedCompensationExpense | 4,865,658 us-gaap_AllocatedShareBasedCompensationExpense | 2,712,173 us-gaap_AllocatedShareBasedCompensationExpense
Issuance of common stock for services | 0 us-gaap_IssuanceOfStockAndWarrantsForServicesOrClaims | 49,000 us-gaap_IssuanceOfStockAndWarrantsForServicesOrClaims | 1,228,250 us-gaap_IssuanceOfStockAndWarrantsForServicesOrClaims
Issuance of common stock as settlement |  | 3,108,347 zero_CommonStockIssuedAsSettlementValue |
Amortization of debt issuance costs and original issue debt discounts including beneficial conversion feature | 39,619 us-gaap_AmortizationOfFinancingCostsAndDiscounts | 0 us-gaap_AmortizationOfFinancingCostsAndDiscounts | 3,620,092 us-gaap_AmortizationOfFinancingCostsAndDiscounts
Change in fair value of derivative liability | 0 us-gaap_IncreaseDecreaseInDerivativeLiabilities | 220,614 us-gaap_IncreaseDecreaseInDerivativeLiabilities | 4,023,094 us-gaap_IncreaseDecreaseInDerivativeLiabilities
Gain on extinguishment of derivative liability | 0 us-gaap_DerivativeGainLossOnDerivativeNet | (3,441,752)us-gaap_DerivativeGainLossOnDerivativeNet | (2,445,095)us-gaap_DerivativeGainLossOnDerivativeNet
Gain on disposition of assets | 0 us-gaap_GainLossOnSaleOfPropertyPlantEquipment | (41,923)us-gaap_GainLossOnSaleOfPropertyPlantEquipment | 0 us-gaap_GainLossOnSaleOfPropertyPlantEquipment
Depreciation and amortization | 13,825 us-gaap_DepreciationAndAmortization | 15,399 us-gaap_DepreciationAndAmortization | 36,077 us-gaap_DepreciationAndAmortization
Changes in operating assets and liabilities: |  |  |
Prepaid expenses and other current assets | (15,295)us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets | 10,202 us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets | 37,775 us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets
Other assets | 0 us-gaap_IncreaseDecreaseInOtherOperatingAssets | 4,500 us-gaap_IncreaseDecreaseInOtherOperatingAssets | 0 us-gaap_IncreaseDecreaseInOtherOperatingAssets
Accounts payable and accrued expenses | (107,577)us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities | (43,408)us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities | (192,796)us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities
Accounts payable - license agreements | 219,863 us-gaap_IncreaseDecreaseInAccountsPayable | (130,400)us-gaap_IncreaseDecreaseInAccountsPayable | 137,725 us-gaap_IncreaseDecreaseInAccountsPayable
Accounts payable and accrued expenses - related parties | (402,521)us-gaap_IncreaseDecreaseInAccountsPayableRelatedParties | 128,750 us-gaap_IncreaseDecreaseInAccountsPayableRelatedParties | (342,718)us-gaap_IncreaseDecreaseInAccountsPayableRelatedParties
Net cash used in operating activities | (3,527,695)us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations | (5,912,368)us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations | (4,517,585)us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations
Cash flows from investing activities |  |  |
Purchase of equipment | 0 us-gaap_PaymentsToAcquirePropertyPlantAndEquipment | (7,573)us-gaap_PaymentsToAcquirePropertyPlantAndEquipment | (16,142)us-gaap_PaymentsToAcquirePropertyPlantAndEquipment
Proceeds from sale of equipment | 0 us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment | 27,000 us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment | 0 us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment
Net cash provided by (used in) investing activities | 0 us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperations | 19,427 us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperations | (16,142)us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperations
Cash flows from financing activities |  |  |
Net proceeds from issuance of convertible notes and warrants | 254,900 us-gaap_ProceedsFromConvertibleDebt | 0 us-gaap_ProceedsFromConvertibleDebt | 1,835,840 us-gaap_ProceedsFromConvertibleDebt
Net proceeds from exercise of warrants and options | 1,383,284 zero_NetProceedsFromExerciseOfWarrantsAndOptions | 8,428,218 zero_NetProceedsFromExerciseOfWarrantsAndOptions | 3,681,881 zero_NetProceedsFromExerciseOfWarrantsAndOptions
Net cash provided by financing activities | 1,638,184 us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperations | 8,428,218 us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperations | 5,517,721 us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperations
Net (decrease) increase in cash | (1,889,511)us-gaap_CashPeriodIncreaseDecrease | 2,535,277 us-gaap_CashPeriodIncreaseDecrease | 983,994 us-gaap_CashPeriodIncreaseDecrease
Cash, beginning of period | 4,137,068 us-gaap_Cash | 1,601,791 us-gaap_Cash | 617,797 us-gaap_Cash
Cash, end of period | 2,247,557 us-gaap_Cash | 4,137,068 us-gaap_Cash | 1,601,791 us-gaap_Cash
Supplemental disclosures of cash flow information |  |  |
Cash paid during the year for: Interest | 0 us-gaap_InterestPaidNet | 260 us-gaap_InterestPaidNet | 7,640 us-gaap_InterestPaidNet
Cash paid during the year for: Income taxes | 0 us-gaap_IncomeTaxesPaidNet | 0 us-gaap_IncomeTaxesPaidNet | 0 us-gaap_IncomeTaxesPaidNet
Non-cash investing and financing activities |  |  |
Conversion of accounts payable and accrued expenses to convertible debentures | 0 zero_ConversionOfAccountsPayableAndAccruedExpensesToConvertibleDebentures | 0 zero_ConversionOfAccountsPayableAndAccruedExpensesToConvertibleDebentures | 52,371 zero_ConversionOfAccountsPayableAndAccruedExpensesToConvertibleDebentures
Conversion of convertible debentures to common stock | 35,750 us-gaap_StockIssuedDuringPeriodValueConversionOfConvertibleSecuritiesNetOfAdjustments | 0 us-gaap_StockIssuedDuringPeriodValueConversionOfConvertibleSecuritiesNetOfAdjustments | 3,789,634 us-gaap_StockIssuedDuringPeriodValueConversionOfConvertibleSecuritiesNetOfAdjustments
Exercise of options and warrants applied to accounts payable | 30,000 zero_ExerciseOfOptionsAndWarrantsAppliedToAccountsPayable | 49,000 zero_ExerciseOfOptionsAndWarrantsAppliedToAccountsPayable | 0 zero_ExerciseOfOptionsAndWarrantsAppliedToAccountsPayable
Fair value of warrants issued to settle payables | 0 zero_FairValueOfWarrantsIssuedToSettlePayables | 129,622 zero_FairValueOfWarrantsIssuedToSettlePayables | 0 zero_FairValueOfWarrantsIssuedToSettlePayables
Receivable from sale of equipment | 0 zero_ReceivableFromSaleOfEquipment | 27,000 zero_ReceivableFromSaleOfEquipment | 0 zero_ReceivableFromSaleOfEquipment
Fair value of warrants and beneficial conversion feature associated with issued convertible notes | $ 119,671 us-gaap_AdjustmentsToAdditionalPaidInCapitalConvertibleDebtWithConversionFeature | $ 0 us-gaap_AdjustmentsToAdditionalPaidInCapitalConvertibleDebtWithConversionFeature | $ 1,888,211 us-gaap_AdjustmentsToAdditionalPaidInCapitalConvertibleDebtWithConversionFeature

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