News
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NeuroscienceIn mice, anxiety isn’t all in the head. It can start in the heart
Scientists used optogenetics to raise the heartbeat of a mouse, making it anxious. The finding could offer a new angle for studying anxiety disorders.
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LifeHoneybees waggle to communicate. But to do it well, they need dance lessons
Young honeybees can’t perfect waggling on their own after all. Without older sisters to practice with, youngsters fail to nail distances.
By Susan Milius -
ArchaeologySome monkeys accidentally make stone flakes that resemble ancient hominid tools
A study of Thailand macaques raises questions about whether some Stone Age cutting tools were products of planning or chance.