Saturday Citations: Parrots on the internet; a map of human wakefulness; the most useless rare-earth element

We field a torrent of science news updates every week and on Saturday morning, we highlight three or four of them based on the observed preferences of a panel of dogs as shown by the Paired-Stimulus Preference Assessment, a standardized evaluation of preferred stimuli. This week, the dogs selected stories about parrot-to-parrot video calling, loud human noises, and a new neural map of human wakefulness.

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