Researchers model unihemispheric sleep in humans

Some animals, such as birds, dolphins, and whales, can engage in unihemispheric sleep, in which one hemisphere of the brain sleeps while the other hemisphere remains awake. Staying half-awake allows animals to literally "keep ...

Organics on Ceres may be more abundant that originally thought

Last year, scientists with NASA's Dawn mission announced the detection of organic material—carbon-based compounds that are necessary components for life—exposed in patches on the surface of the dwarf planet Ceres. Now, ...

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