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    • Do You Really Need Sunscreen Every Day?

      Do You Really Need Sunscreen Every Day?

      New York Times· 4 days ago

      When we step outside on a clear day, the sun’s ultraviolet light triggers the body to produce endorphins that lower stress and boost mood. UV rays also...

    • Why didn’t green fur evolve among mammals?

      Why didn’t green fur evolve among mammals?

      New Scientist· 3 days ago

      Our readers suggest this could be because mammals can’t distinguish between red and green, but also point to the fact that some sloths are green, due to...