News

Humans

Mirror system gets an assist

Study finds two brain systems are surprisingly active when an amputee observes a task she can’t perform.

Psychology

Narcissists need no reality check

Masters of vanity know they’re arrogant and disliked, but see own bigheadedness as justified.

Physics

A cloak in time

Physicists hide events in the laboratory for trillionths of a second.

Animals

Baboon bosses get stressed for success

In the wild, the most powerful males reign tensely.

Math

Varying efficacy of HIV drug cocktails explained

Steepness of slope in dose-response curve tips off researchers to importance of timing in virus’s life cycle.