Hundreds of thousands of people around the world participated in the March for Science past year.
On April 22, last year, more than a million scientists, teachers and supporters of scientific thought marched in more than 600 cities around the world in a unique initiative to defend science and scientific outlook. An essay contest for the High School students and a poster contest for the middle school students are part of this year's march.
This year's main march took place outside the National Mall in Washington, D.C, with more than 230 satellite events scheduled worldwide.
"Too often nowadays, decisions are based on ideology or special interests rather than empirical evidence", said attendee Randolph Bower, an air-pollution scientist at a Research Triangle Park firm. "Also to help with the communication of facts and research to help educate people that may not have the resources they need to understand science and its impact on everyone".More news: How to Watch Coachella's First Weekend Live
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"There's no room for climate deniers", she said.
Messages from Prof M S Swaminathan, an agricultural scientist from Chennai, Prof M Anandakrishnan, for the VC of Anna University and former chairman of IIT Kanpur and Prof Deepankar Chatterjee, honorary professor at IISc were read on the occasion.
The rally and march are meant to serve as "a physical and symbolic show of the movement toward a future where science serves all", says a press release from the organizing committee. Trump had established a long record of criticizing climate science and suggested it was a hoax perpetuated by the Chinese government, despite scientific evidence that contradicted those beliefs.