A new study claims that a comet influenced the direction of Native American cultures 1,600 year ago. That conclusion is controversial but it reveals the challenge of understanding natural hazards in the ancient past. ...read more
From snakes to spiders to scary sea creatures, the world's smallest continent has it all. But how unique are they? ...read more
Hundreds of thousands of simulations show few possible exoplanets with climate conditions like ours. ...read more
Thirty days hath . . . every month except the ones that have 31 days. Why did February get stuck with only 28? ...read more
Weight gain and changes within the brain can disrupt our precious shut-eye as we get older, but there are ways to mitigate these changes. ...read more
A new vision of the skeleton as a dynamic organ that sends and receives messages suggests potential therapies for osteoporosis and other problems ...read more