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Hosts: Ed Brown, Penny Dumsday, Lucas Randall
00:02:00 There\'s a stream of stars hurtling through our region of the Milky Way galaxy, and they\'re bringing with them a "dark matter hurricane". It\'s probably nothing to worry about, though.
00:12:16 For the first time since 1889, the kilogram has been redefined according to a natural constant, instead of a lump of metal in a vault in Paris. The actual mass, for all intents and purposes, remains the same.
00:23:51 Previous studies of Neanderthal skulls found high rates of head injuries leading experts to believe they were a violent, savage people. But a new study finds that our human ancestors had a similar injuries and might not have been much different.
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This episode contains traces of Professor Brian Greene explaining Dark Matter to CNN\'s Fareed Zakaria.
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