Consolidated Balance Sheets (Current Period Unaudited) - USD ($)	Jun. 30, 2022	Dec. 31, 2021
Current assets:
Cash and cash equivalents	$ 5,965,726	$ 37,313,558
Marketable securities	22,574,681	0
Prepaid expenses, deposits and other current assets	643,618	510,015
Total current assets	29,184,025	37,823,573
Other assets	0	15,578
Total assets	29,184,025	37,839,151
Current liabilities:
Accounts payable	846,032	947,495
Accrued expenses and other current liabilities	1,668,990	1,980,189
Total current liabilities	2,515,022	2,927,684
Commitments and Contingencies (Note 9)
Stockholders’ Equity:
Common stock, $0.001 par value: 1,000,000,000 shares authorized: 2,038,914 and 2,038,185 shares issued and outstanding at June 30, 2022 and December 31, 2021, respectively	2,038	2,038
Additional paid-in capital	165,475,801	164,914,540
Accumulated other comprehensive loss	(86,583)	0
Accumulated deficit	(138,722,253)	(130,005,111)
Total stockholders' equity	26,669,003	34,911,467
Total liabilities and stockholders' equity	$ 29,184,025	$ 37,839,151