Note 2 - Liquidity and Capital Resources	9 Months Ended
Sep. 30, 2021
Notes to Financial Statements
Liquidity and Capital Resources [Text Block]	NOTE 2: LIQUIDITY AND CAPITAL RESOURCES The Company has incurred net losses and negative operating cash flows since inception. For the nine months ended September 30, 2021, the Company recorded a net loss of $15,774,462 and used $12,806,602 of cash in operating activities. As of September 30, 2021, the Company had $140,040,955 in cash and cash equivalents and working capital of $141,311,063. The Company has not yet established an ongoing source of revenue sufficient to cover its operating costs and believes it will need to continue to raise substantial additional capital to accomplish its business plan over the next several years. Management believes its currently available funding, including the funds received from warrant exercises and financing transactions with net proceeds of $113,486,817 in the first nine months of 2021, will be sufficient to finance the Company’s operations for at least one year from the date these condensed consolidated financial statements are issued. The Company plans to continue to fund its losses from operations and capital funding needs through a combination of public or private equity offerings, debt financings or other sources, including potential corporate collaborations, licenses and other similar arrangements. There can be no assurance as to the availability or terms upon which such financing and capital might be available in the future. If the Company is unable to secure additional funding, it may be forced to curtail or suspend its business plans.

Note 2 - Liquidity and Capital Resources

9 Months Ended

Sep. 30, 2021

Liquidity and Capital Resources [Text Block]

NOTE 2: LIQUIDITY AND CAPITAL RESOURCES

The Company has incurred net losses and negative operating cash flows since inception. For the nine months ended September 30, 2021, the Company recorded a net loss of $15,774,462 and used $12,806,602 of cash in operating activities. As of September 30, 2021, the Company had $140,040,955 in cash and cash equivalents and working capital of $141,311,063. The Company has not yet established an ongoing source of revenue sufficient to cover its operating costs and believes it will need to continue to raise substantial additional capital to accomplish its business plan over the next several years. Management believes its currently available funding, including the funds received from warrant exercises and financing transactions with net proceeds of $113,486,817 in the first nine months of 2021, will be sufficient to finance the Company’s operations for at least one year from the date these condensed consolidated financial statements are issued. The Company plans to continue to fund its losses from operations and capital funding needs through a combination of public or private equity offerings, debt financings or other sources, including potential corporate collaborations, licenses and other similar arrangements. There can be no assurance as to the availability or terms upon which such financing and capital might be available in the future. If the Company is unable to secure additional funding, it may be forced to curtail or suspend its business plans.