The Powerball jackpot for Monday’s drawing is $33 million - less than a week after someone won $1.8 billion on Christmas Eve. Saturday's Powerball jackpot was $21.1 million after a ticket holder in ...

National security, unlocked. Each Thursday, host Mary Louise Kelly and a team of NPR correspondents discuss the biggest national security news of the week. With decades of reporting from battlefields ...

Several studies evaluate high-density single-nucleotide polymorphism (SNP) arrays for the detection of copy-number variations in human genomes. Many debilitating diseases have complex genetic roots, ...