400 Parts in a Million: The World’s Biggest Experiment

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This episode was made possible by the generous support of Science Alert – and

Special thanks to Anne Reich and Julia Wilber for their contributions to the script.

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MinuteEarth provides an energetic and entertaining view of trends in earth’s environment — in just a few minutes!

Created by Henry Reich, with Alex Reich, Peter Reich, Rose Eveleth, Emily Elert, and John Guittar.

Music by Nathaniel Schroeder: