Cells
- Animals
Half rooster, half hen
Study of special chickens suggests new thinking on hormones and gender.
- Animals
The nerve of one animal
Cancer that's killing Tasmanian devils probably began in a single creature's nervous system.
- Health & Medicine
Making good, brown fat
Researchers find a way to make energy-burning fat out of other types of cells.
- Health & Medicine
Sun screen
Too much exposure to the sun's ultraviolet rays can damage human skin. That's why doctors recommend people who will be outdoors for long hours in the summer sun protect their skin.
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