On April 22, 1970, the first Earth Day was declared by Richard Nixon, although it was a number of Democratic Senators, including most notably Gaylord Nelson of Wisconsin, who pushed the idea, accepted and made official by the US government.
On April 22, 1994, the 25th Earth Day declaration, Richard Nixon passed away, now 30 years having passed since then.
Joe Biden has been very active in promoting environmental reform, and many environmental groups, including the Conservation Lands Foundation have hailed Biden as one of the best Presidents on the issue of the environment!
Much work has been done, but the environmental movement still faces threats from MAGA Republicans and Donald Trump, who if returned to the White House, would cut back on advancements that have occurred!
So the battle for the future of the environment still rages!