Science & Nature
Learn how the universe works, from physics and biology to ecosystems and sustainability.
Some of the stories included
Henrietta Leavitt's Cosmic YardstickHow a quiet astronomer measured the universe and changed astronomy forever.
The Formation of the Grand CanyonJourney through time to explore how the Grand Canyon was formed, shaped by ancient forces and the power of nature.
Frances Kelsey & ThalidomideFDA reviewer Frances Kelsey held off approval 14 months, sparing the US the worst of thalidomide.
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