News

Health & Medicine

How brains guesstimate

Experiments show how the human mind lowballs moving objects’ speed when information is lacking.

Psychology

Club drug tied to out-of-body sensations

A Canadian survey finds a close link between ketamine and bizarre physical experiences.

Life

Lab-engineered organism fights malaria

A new breed of poison-secreting fungi can kill parasites in a mosquito.

Humans

U.S. probably began global fire ant spread

A genetic study shows that recent international invasions likely originated in the U.S. South, not the species’ native South American range.

Chemistry

Mad cow-type diseases lie in wait

Prion infections build quickly in the brain then pause before killing, new research suggests.