News

Planetary Science

Water arrived on Earth earlier than thought

Ancient meteorites from the asteroid Vesta indicate that Earth’s water was available before planet formed.

Psychology

Rip-off victims prefer compensation to retribution

But those acting on behalf of victims favor a punishment that fits the crime.

Life

Close look at new fungus reveals origins, spread of salamander killer

A second chytrid fungus described last year targets salamanders and may be spreading in the animal export trade.

Earth

Early animals couldn’t catch a breath

Low levels of oxygen may have hindered evolution of animal life hundreds of millions of years ago.