British scientists claim they have created human sperm from stem cells. But other experts have questioned their data.

A thin-looking Kim Jong Il made a rare public appearance Wednesday as North Korea paid solemn respects to his father, the country's late founder, on the 15th anniversary of his death.

Drivers are spending less time stuck in rush-hour traffic for a second straight year, the first-ever two-year decline in congestion as high gas prices and the economic downturn force many Americans to change how they commute.