April 22, 1970: The first nationwide Earth Day celebration is organized by Sen. Gaylord Nelson and Dennis Hayes. It creates a national political presence for environmental concerns. Millions of Americans demonstrate for air and water cleanup and preservation of nature.
April 22, 2017: March for Science. “The March for Science champions robustly funded and publicly communicated science as a pillar of human freedom and prosperity. We unite as a diverse, nonpartisan group to call for science that upholds the common good and for political leaders and policy makers to enact evidence based policies in the public interest.
The March for Science is a celebration of science. It’s not only about scientists and politicians; it is about the very real role that science plays in each of our lives and the need to respect and encourage research that gives us insight into the world.
Nevertheless, the march has generated a great deal of conversation around whether or not scientists should involve themselves in politics. In the face of an alarming trend toward discrediting scientific consensus and restricting scientific discovery, we might ask instead: can we afford not to speak out in its defense?
There is no Planet B. Join the #MarchForScience.”
Commentary: I am proud to support the March for Science. We have no choice but to speak out to protect our freedoms and what we believe in. I believe in truth and the search for it.
April 22, 1915: The use of poison gas in World War I escalates when chlorine gas is released as a chemical weapon in the Second Battle of Ypres. Forevermore, chlorine is not considered a viable alternative disinfectant in Europe.