A school of manini fish passes over a coral reef at Hanauma Bay in 2005, in Honolulu. Researchers say schooling behavior like the kind seen in fish helps groups of animals make better decisions than any one member of the group could.
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Fans make their way into the ballpark prior to the Detroit Tigers hosting the New York Yankees in Game 4 of the American League Championship Series at Comerica Park in Detroit.
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An image of researchers at Oregon Health & Science University removing the nucleus from the mother's cell before it's inserted into the donor's egg cell.
Courtesty of Oregon Health & Science University