Tourists are descending on the Tidal Basin to see the cherry blossoms, which reached their peak bloom over the weekend, ...

As most people who have pulled an all-nighter will agree, lost sleep can leave us feeling foggy and far from our best. In ...

However, a new study of European jackdaws shows that this strategy has its limits: when sleep-deprived, these clever, social ...

Birds, unlike humans, can sleep deeply with both halves of their brains (symmetrically) or with one half sleeping lighter than the other (asymmetrically). • Study of European jackdaws led by an ...