Note 13 - Subsequent Events	6 Months Ended
Jun. 30, 2021
Notes to Financial Statements
Subsequent Events [Text Block]	*Note 13.* Subsequent Events. Management has evaluated subsequent events through the date of the filing of this Annual Report and management noted the following for disclosure. Sales to Lincoln Park** From July 1, 2021, through August 9, 2021, we sold 884,391shares of our common stock to Lincoln Park (see Note 3), and received $164,000 in gross and net proceeds. *Unit Offering Investment* From July 1, 2021, through August 12, 2021, we received one investment in our 2020 Unit Offering (see Note 3) of $70,000 and issued 388,889 shares of common stock, a six-month warrant to purchase 388,889 shares of common stock at $0.216 per share, and a five-year warrant to purchase 388,889 shares of common stock at $0.27 per share.

The entire disclosure for significant events or transactions that occurred after the balance sheet date through the date the financial statements were issued or the date the financial statements were available to be issued. Examples include: the sale of a capital stock issue, purchase of a business, settlement of litigation, catastrophic loss, significant foreign exchange rate changes, loans to insiders or affiliates, and transactions not in the ordinary course of business.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 855
-URI http://asc.fasb.org/topic&trid=2122774

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 855
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=6842918&loc=SL6314017-165662

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