Feature
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Proteins in the Stretch
Scientists are for the first time getting a feel for how proteins fold and unfold.
- Health & Medicine
Food Colorings
Many deeply hued plant pigments appear to offer health benefits, from fighting heart disease and obesity to preserving memory.
- Tech
Frankenstein’s Chips
As evidence mounts that drug-safety trials can miss dangerous effects, scientists are building living, miniature models of animals and people to enhance drug and chemical tests.
- Earth
Hidden Canyons
Among Earth's unsung geological masterpieces are undersea canyons, some of which stretch hundreds of kilometers and can be deep enough to hold skyscrapers.
