estimate

Arctic Ice Already Thinning at a ‘Frightening Rate’, Satellites Reveal

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New satellite data has revealed the Arctic is melting at a “frightening rate” due to the excess heat caused by human greenhouse gas emissions.  End-of-season Arctic multiyear sea ice – the ice that persists over several years – was roughly 50 centimeters (1.6 feet) thinner in 2021 than it was in 2019, the figures show, … Read more

Animal behaviour: Rats can accurately estimate the passage of time

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Rats trained to leave 3.2 seconds between presses of a lever or to hold it down for this length of time seem able to judge whether they were accurate enough to have earned a reward Life 21 February 2022 By Carissa Wong Rats can judge their ability to keep track of the passage of time … Read more

A New Study Calculates The Number of Black Holes in The Universe. It’s a Lot

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Because we can’t see black holes, it’s hard to know exactly how many are out there in the big, wide Universe. But that doesn’t mean we have no means of trying to figure it out. Stellar-mass black holes are the collapsed cores of dead massive stars, and new research incorporating how these stars and binaries … Read more