News

Physics

New clock revolves around an atom’s mass

A controversial new study claims that time can be measured by precisely determining a single particle's heft.

Humans

Pruney digits help people get a grip

Finger and toe wrinkling may have evolved as an adaptation to wet conditions.

Health & Medicine

Updated Pap smear detects ovarian, uterine cancers

Adding a genetic analysis to the procedure reveals mutations specific to the two malignancies.

Earth

Quakes may bring nearby rocks closer to rupture

Lab studies could explain how a seemingly stable geologic fault can fail.

Life

City lights create sexual early birds

Male blackbirds exposed to nocturnal illumination are ready to mate sooner in spring.