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An ecological invasion mimics a drunken walk
An ecological invasion mimics a drunken walk 11 January 2017A theory that uses the mathematics of a drunken walk describes ecological invasions better than waves, according to Tim Reluga, associate professor of mathematics and biology, Penn State.
Deepest x-ray image ever reveals black hole treasure trove
Deepest x-ray image ever reveals black hole treasure trove 09 January 2017An unparalleled image from NASA’s Chandra X-ray Observatory is giving an international team of astronomers the best look yet at the growth of black holes over billions of years beginning soon after the Big Bang. This is the deepest X-ray image ever obtained, collected with about 7 million seconds, or 11 and a half weeks, of Chandra observing time.
Stressed snakes strike first
Stressed snakes strike first   21 December 2016

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