The last few days have been 40ºC degrees warmer than normal in eastern Antarctica.

About one in seven people 60 and older have a brain condition that may be an early sign of Alzheimer's disease. The condition, called mild cognitive impairment, occupies a gray zone between normal aging of the brain and dementia. And most people know almost nothing about it.

The Endurance Shipwreck Is a Bridge to a Bygone Age, and a Reminder of Antarctica’s Uncertain Future

Once Extreme Ocean Temperatures Are the New Normal