News
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LifeCats engineered for disease resistance
Genetically modified felines created in an effort to fight feline immunodeficiency virus.
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LifeThirsty frogs make do with dew
An Australian species exploits condensation to get a drink by chilling down outside and then hopping into its warm, humid lair.
By Susan Milius -
SpaceSuper-Earths may come in two flavors
As more exoplanets are discovered, evidence emerges that worlds can be either fluffy or dense.
By Nadia Drake -
HumansFossil finds offer close look at a contested ancestor
Nearly 2 million-year-old fossils offer glimpses of a species that may, or may not, have been crucial for human evolution.