Sep. 29, 2018 - Narcolepsy shows the importance of sleep, bird voiceboxes, neutron star nuclear pasta and more

Manta rays and filtering water, a UV sensing wristband and the colour of bird poop

Manta rays and filtering water, a UV sensing wristband and the colour of bird poop

According to Reut Gruber, an associate professor in the department of psychiatry at McGill University, a short nap of 20 minutes can be good, but inconsistent sleep patterns can actually be harmful. (Prachaya Roekdeethaweesab/Shutterstock)
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