AI solves the Rubik’s cube | Nature Briefing
Hello Nature readers,
Today we learn that protests have shut down 13 observatories on Mauna Kea, discover that a deep-learning algorithm has taught itself to solve a Rubik’s cube and hear how researchers recover when a disaster destroys everything.
(Philippe Psaila/Science Photo Library)
Researchers rethink mouse swim tests
Animal-welfare campaigners and scientists have growing concerns about a popular test in which mice or rats are dropped into a tank of water while researchers watch to see how long the animal tries to stay afloat. In theory, a depressed rodent will give up more quickly than a happy one. But mental-health researchers have become increasingly sceptical in recent years about whether the forced-swim test is a good model for depression in people.
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Mauna Kea protest shuts down observatories