News
- Health & Medicine
Lo-Cal bones hold up
One study of many recent investigations of how calorie restriction affects people shows that bone density does not necessarily suffer when a person loses weight quickly.
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- Life
FDA releases guidelines for genetically modified animals
Draft rules lay out policies for approving altered animals, including those used for food.
- Chemistry
A better fate for plastic bottles
Using microbes to convert PET into a high-value plastic could encourage more recycling.
- Planetary Science
Racing against the Martian winter
With solid findings under its belt and the Martian summer waning, the Phoenix Mars lander perseveres in its study of the soil and sky of the planet’s arctic plain.
