Science, Human Genome | featured news

Our ancestors didn't walk alone: Neanderthals and other ancient peoples shared Earth with them tens of thousands of years ago. Now, using new technology, scientists have sequenced with high precision the genome of one of those close but little-known relatives: an extinct people known as the Denisovans, who lived in and around modern-day Siberia.

Alcohol increases reaction time; obese men have lower odds of getting married. A waste of research money? Not necessarily, scientists say. Medical researchers have unlocked the human genome, wiped out smallpox and made great strides in the fight against AIDS.