Feature
- Astronomy
The Hole Story
New evidence suggests that supermassive black holes have an impact on the evolution of galaxies that goes far beyond their gravitational grasp.
- Health & Medicine
Palm-Nut Problem
The ancient custom of chewing areca nuts is getting more popular as young Asians take up the habit, but betel-nut chewing has been linked to several types of oral cancer.
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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.
