Researchers have unveiled a bird-shaped robot that can hop, walk and leap into flight just like a raven. The new machine, aptly called "Robotic Avian-inspired Vehicle for multiple Environments ...
Pinpointing when birds diverged completely from dinosaurs has long remained a paleontological mystery.
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A set of fossils discovered in East China's Fujian province has been identified as the only known unambiguous record of ...
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