The Cosmological Constant

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Rachel Pike: The science behind a climate headline | Video on TE
Jor-El: Last-ditch appeal to save the planet
Garik Israelian: How spectroscopy could reveal alien life | Vide
Nick Sears demos the Orb
Bruno Bowden folds while Rufus Cappadocia plays | Video on TED.c
Charles Fleischer insists: All things are Moleeds | Video on TED
Sean Carroll on the arrow of time (Part 2)