50-year anniversary of iconic ‘Blue Marble’ photo
From the Watch Now: Herd of cows help police catch suspect in U.K., and more of today's top videos series
It’s been 50 years since the Apollo 17 astronauts took this iconic photo of our planet Earth on Dec. 7, 1972; this was the last time humans have ever walked on the moon.
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Watch a herd of cows help police catch a suspect in the U.K., a rare ice age lion fossil was…
