News

Materials Science

Pliable carbon

The layers of carbon atoms that form graphite can be assembled into strong but flexible "graphene paper."

Health & Medicine

CT heart scans: Risk climbs as age at screening falls

CT scans are increasingly used to investigate heart blockages, but their X rays can increase cancer risk.

Animals

Gender bender

Disabling a chemical-sniffing organ crucial for courting behavior makes girl mice act like frisky boys.

Earth

Cholesterol boosts diesel toxicity

Nanoparticles in diesel exhaust can activate genes that worsen cholesterol's damaging effects.

Planetary Science

Deep Impact and Stardust: Still on assignment

Two sturdy NASA spacecraft have new assignments, studying comets and looking for exoplanets.