Feature

Infections May Underlie Cerebral Palsy

Physics Nobel Spotlights Quantum Effect

Dogs and Cats in Their Dotage

Antarctic Ozone Hole Reaches Record Size

Marginal Groups Thrive on the Internet

Paleontology

Biology

The Trouble with Magazines

Front Matter

Who’s Been Eating All Those Sea Otters?

Does Light Have a Dark Side?

Chemistry Computations Earn Nobel Prize