News

Earth

PCBs may impair fertility

A study of women undergoing in vitro fertilization finds reduced embryo implantation among women with higher levels of one type of the banned chemicals.

Chemistry

Diamond cousin proposed

Researchers predict a new form of carbon that could, if made, have industrial uses.

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.