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Simulation of the collision of two black holes (SXS, www.black-holes.org)
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Theme music bed copyright Raphaël Gluckstein, Creative Commons License by-nc-nd-2.0
Scientists working with the twin LIGO instruments have detected ripples in space-time caused by the merger of two distant black holes
Practice makes Mr. Perfect for songbirds, who rehearse outside of mating season
Modern European and Asian people have 1-4% Neanderthal genes, and some of them seem to be connected to a range of health and psychiatric problems.
Horses shown pictures of angry humans react with fear, while happy faces don't alarm them.
Like modern humans, an ancient relative couldn't have dealt with harder foods, which signalled a dietary shift that was important for the path of human evolution.
An extremely rare fish that lives in a desert sinkhole got there recently by migrating across dry land.
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