News

Life

Oxytocin stimulates repair of old mice’s muscles

The naturally produced hormone oxytocin, well known for its role in social bonding, may help heal injured muscles in the elderly.

Astronomy

Stopping starlight may bring other Earths into focus

Two new telescope concepts compete for NASA’s approval, in hopes of taking the first picture of a life-bearing exoplanet.

Agriculture

Fertilizer produces far more greenhouse gas than expected

Farmers’ overuse of nitrogen-based fertilizers may explain previously puzzling high emissions of nitrous oxide.

Neuroscience

Rats feel regret, experiment finds

When they turn down a good meal for a lesser one, rodents regret their choice, a study suggests.