Sanders, Warren, Harris, O'Rourke, Castro, Gabbard, Gillibrand and Booker tee | 2020 Democratic Primary Candidates Color:Heather Grey Charles Darwin was a British

Charles Darwin was a British scientist best known for his contributions to evolutionary theory

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Daniel Dennett

Evolution - it's Naturally Selective

Challenger deployed several satellites into orbit

Sanders, Warren, Harris, O'Rourke, Castro, Gabbard, Gillibrand and Booker tee | 2020 Democratic Primary Candidates Color:Heather Grey Charles Darwin was a BritishWith so many excellent 2020 Democratic candidates running for President, it can be hard to choose which one to support. So show your support for these 2020 candidates to let them and others know that whoever gets the nominationthey'll have your VOTE! Register to Vote: Vote. gov