Denmark residents react to Trump’s remarks on Greenland Residents in Copenhagen, Denmark, react to President-elect Donald ...

Major indexes were down slightly in afternoon trading Wednesday as the stock market struggled to recover from the previous session's steep losses.

Scientists have discovered a crucial mechanism behind one of sleep's most vital functions - cleaning toxins from the brain.

Novo Nordisk's U.S.-listed and domestic shares rose Wednesday after analysts from UBS upgraded the Danish drugmaker's stock ...

More and more people are using sleep medication, and it’s really important to know if that’s healthy sleep,” said lead study ...

Donald Trump says the U.S. needs control of Greenland and the Panama Canal "for national security." Here's why both places are so important.

New research shows how norepinephrine-driven oscillations during non-REM sleep activate the glymphatic system to clear brain waste linked to Alzheimer’s. The sleep aid zolpidem disrupts this process, ...

Deep sleep may clear the brain of toxic waste via a process driven by norepinephrine, a molecule that creates rhythmic blood vessel contractions.

The norepinephrine molecule helps clear the brain of waste like dirty dishes in a dishwasher, and scientists think their ...

Danish scientists found that a molecule called norepinephrine plays a key role in brain cleaning in mice. During deep sleep, ...

Greenland may become independent if its residents want, but is unlikely to become a U.S. state, Denmark's foreign minister ...

The brain is a very busy organ and as it works, it accumulates toxic proteins that can cause sticky plaques. These plaques have been linked to several neurological disorders, including Alzheimer’s, ...