2017年4月17日 星期一

NASA Celebrates Earth Day with Public Events, Online Activities

This year, NASA will celebrate Earth Day, April 22, with a variety of live and online activities Thursday and Friday, April 20-21, to engage the public in the agency’s mission to better understand and protect our home planet.

April 17, 2017
from NASA http://ift.tt/2oF4aiP
via IFTTT

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