Scientists have identified two types of brain cell linked to a reduced risk of dementia in older people — even those who have brain abnormalities that are hallmarks of Alzheimer’s disease1....
Astronomers have been closely monitoring Bennu, which swings close to Earth every six years. However, the real cause for concern arises from the possibility that on September 24, 2182, Bennu could collide with our planet with a force equivalent to 22 atomic bombs. While the odds of such a catastrophic strike are estimated at 1...