News
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PaleontologyEarliest primate had tree-climber ankles
A creature known only from fossils of its teeth gets some more parts.
By Susan Milius -
ChemistryHuman blood types have deep evolutionary roots
The ABO system may date back 20 million years or more, a genetic analysis suggests.
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LifeHind wings gave four-winged dino flight control
Much-debated rear wings could have given Microraptor extra help in airborne maneuvers.
By Susan Milius -
EarthSpanish quake linked to groundwater pumping
Draining aquifers likely triggered 2011 tremor that killed nine people.
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LifeFasting hormone helps mice live longer
A protein can trick the body into entering starvation mode.