News

Paleontology

Teeth tell tale of warm-blooded dinosaurs

Evidence locked within the fossil teeth of some dinosaurs may help bolster the view that some of the animals were, at least to some degree, warm-blooded.

Materials Science

Cathedral has weathered London’s acid rain

A decrease in acid rain seems to be responsible for newly reported reduced deterioration rates of St. Paul's Cathedral in London.

Earth

Girls may face risks from phthalates

The high incidence of premature breast development in Puerto Rican girls has been linked with phthalates, a family of ubiquitous pollutants found in plastics, lubricants, and solvents.

Astronomy

Telescope unveils a stellar deception

A heavenly masquerade may shed light on the nature of astrophysical jets—the beams of material spewed by a wide variety of celestial objects.