News
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Night Patrol for Tired Cops: Police lose sleep over workday hassles
A large proportion of big-city police officers suffers from insomnia and other serious sleep problems that stem from chronic work stress.
- Materials Science
Osmium is Forever: Rare metal’s strength humbles mighty diamond’s
A new route to materials harder than diamond may have opened with the surprising finding that the rare metal osmium resists compression better than diamond does.
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Hot Cereal: Rice reveals bumper crop of genes
Two research groups have identified all the genes in rice, the world's most important crop.
- Archaeology
New World hunters get a reprieve
New radiocarbon evidence indicates that, beginning around 11,000 years ago, human hunters contributed to North American mammal extinctions that had already been triggered by pronounced climate shifts.
