Reality Checks: Thick Skulls, Thin Atmospheres, and Cheerleading

• Our skulls didn’t evolve to take a hit. (via Laelaps)
• Doctors don’t know what women want to know about contraception. (via NPR)
• The American Medical Association officially classifies cheerleading as a sport. (via USA Today)
• Pluto and Charon may share as thin atmosphere. (via Discovery News)

Featured image credit: NASA/JPL

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