Mike Brown

Feb. 04, 2011

Why The Former Planet Pluto Got Demoted

The author of 'How I Killed Pluto....' talks about the celestial object's status change.

pluto, planet, dwarf planet, minor planet, exosolar planet

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Michael Pollan Talks Plants and Food

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Author Scott Weems lets us in on the jokes and uncovers the science of humor.

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