Mockingbird song decoded

The North American mockingbird is famous for its ability to imitate the song of other birds. But it doesn't just mimic its kindred species, it actually composes its own songs based on other birds' melodies. An interdisciplinary ...

Facebook says video shows reach 720 mn viewers

Facebook said Wednesday some 720 million people are watching its original video shows, making it a growing part of the social network as it wades into the territory of YouTube and other rivals.

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