Note 9 - Equity (Tables)

6 Months Ended

12 Months Ended

Jun. 30, 2024

Dec. 31, 2023

Notes Tables

Schedule of Stock by Class [Table Text Block]

	June 30, 2024
	Number of authorized shares		Number of issued shares
Shares of common stock		2,470,000,000		49,948,710
Series A Preferred Stock		30,000,000		-
Series B Preferred Stock				-
Series C Preferred Stock				2,374,219

	December 31
	2023		2022		2023		2022
	Number of authorized shares		Number of authorized shares		Number of issued shares		Number of issued shares
Shares of common stock		2,470,000,000		2,470,000,000		35,369,877		2,552,744
Series A Preferred Stock						-		-
Series B Preferred Stock		30,000,000		30,000,000		14,578,833		-
Series C Preferred Stock						1,538,134		-

Schedule of Stockholders' Equity Note, Warrants or Rights [Table Text Block]

	Number of Warrants		Weighted Average Exercise Price		Weighted Average Remaining Life
Outstanding warrants, January 1, 2024		2,386,677	$	2.07		2.46
Warrants issued pursuant to units offering		836,531		2.56		-
Outstanding warrants, June 30, 2024		3,223,208	$	2.19		2.19

	Number of Warrants		Weighted Average Exercise Price		Weighted Average Remaining Life
Outstanding warrants, January 1, 2022		123,333	$	7.50		0.85
Warrants issued pursuant to issue of convertible debt and preferred shares to individual investors		198,482		3.00
Warrants issued pursuant to modification of convertible debt		526,749		0.75
Outstanding warrants, December 31, 2022		848,564	$	2.26		2.50
Warrants issued pursuant to units offering		1,538,113		2.56
Outstanding warrants, December 31, 2023		2,386,677	$	2.07		2.46

Share-Based Payment Arrangement, Option, Activity [Table Text Block]

	Number of Stock Options		Weighted Average Exercise Price		Weighted Average Remaining Contractual Term		Aggregate Intrinsic Value
Outstanding Options, December 31,2023		1,291,662	$	2.16		6.18	$	-
Options granted		-		-		-		-
Outstanding Options, June 30, 2024		1,291,662	$	2.16		5.67	$	-

	Number of Stock Options			Weighted Average Grant-Date Fair Value
Non-Vested Options, December 31, 2023		874,886		$	0.50
Options granted		-			-
Options vested		(187,739	)		0.62
Non-Vested Options, June 30, 2024		687,147		$	0.46

	Number of Stock Options		Weighted Average Exercise Price		Weighted Average Remaining Contractual Term		Aggregate Intrinsic Value
Outstanding Options, December 31, 2022		495,746	$	4.70		6.90	$	-
Options granted		795,916		0.58
Outstanding Options, December 31, 2023		1,291,662	$	2.16		6.18	$	-

	Number of Stock Options			Weighted Average Grant- Date Fair Value
Non-Vested Options, December 31, 2022		325,853		$	2.20
Options granted		795,916			0.00
Options vested		(246,883	)		1.15
Non-Vested Options, December 31, 2023		874,886		$	0.50