There's growing evidence that a lack of deep sleep increases the risk of Alzheimer's disease. Scientists say that's because during deep sleep, the brain removes toxins associated with Alzheimer's.
Four astronauts are flying to the International Space Station aboard SpaceX's Dragon crew capsule. The mission is the first of what NASA hopes are many.
Dr. Vivek Murthy, co-chair of President-elect Joe Biden's coronavirus advisory board, says past lockdowns functioned like a "blunt axe" that led to spotty compliance and "little public health gain."
The country set another record for daily infections. America is the world leader in COVID-19 fatalities. President-elect Joe Biden expressed alarm and urged the Trump administration to take action.
Young adults are preparing to travel home for Thanksgiving, but the coronavirus is making things complicated. Epidemiologists say there are things families can to do reduce the risk of infection.
Doctors who helped stop Ebola call on Joe Biden's transition team to address COVID-19's racial and economic inequities. The evidence shows a safety net under the most vulnerable protects us all.
Cicadas can stay totally dry in the pouring rain. One researcher is trying to figure out how they do that. This finding may lead to interesting new materials for humans.