People wearing protective masks walk through a market in Sao Paulo, Brazil, on Thursday, July 30, 2020. Brazil added 69,074 cases on Wednesday, pushing the total number of infections to over 2.55 ...
Invite a guest lecturer to deliver a topical lecture or slide show. Topics to consider include historical scientists, such as Isaac Newton, Galileo Galilei, and Johannes Kepler; science in the ...
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