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Humans

Smelling a rat in a bag of chips

A forensic scientist shares tales from a very special victims unit.

Health & Medicine

Half of adult males carry HPV

Human papillomavirus, a sexually transmitted pathogen that can cause cancer, shows up often in men and lingers for months, a study shows.

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.