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PaleontologyNeck Bones on the Menu: Fossil vertebrae show species interaction
Three fossil neck bones from an ancient flying reptile—one of them with the broken tip of a tooth embedded in it—indicate that the winged creatures occasionally fell victim to meat eaters.
By Sid Perkins -
PlantsRewriting the Nitrogen Story: Plant cycles nutrient forward and backward
For the first time, a green plant has been found to break down nitrogen-containing compounds into the readily usable form of nitrates, a job usually done by microbes.
By Susan Milius -
AnthropologyErectus Experiment: Fossil find expands Stone Age anatomy
A 930,000-year-old fossil cranium found in Africa widens the anatomical spectrum of Stone Age human ancestors and expands debate over how they evolved.