Daily Interlude

Babies 'cry in mother's tongue'

German researchers say babies begin to pick up the nuances of their parents' accents while still in the womb ... more >>

Russia's Conquering Zeros

It may be no accident that, while some of the best American mathematical minds worked to solve one of the century's hardest problems—the Poincaré Conjecture—it was a Russian mathematician working in Russia who, early in this decade, finally triumphed ... more >>

Bolivia's Lithium-Powered Future

A photo essay what the global battery boom means for the future of South America's poorest country ... more >>

Gorbachev on His Legacy, and Obama's Chance to Lead an American Perestroika

The former Soviet leader on his push for a peaceful dissolution of the Russian empire, and his idea that the US should follow suit ... more >>