Learn how rats with naturally high hormone levels chose to chill out by seeking puffs of cannabis vapor.

Learn what the first maps of the sun's atmospheric boundary reveal about solar wind and its escape into space.

For the first time, scientists have proven tanning beds are more dangerous than the sun and cause widespread DNA damage.

Learn how hunger affects mood only when people consciously feel it — not simply when energy levels drop.

Learn more about nanoplastics and how easily they can get into the bloodstream of zebrafish, resulting in buildup in the brain and reproductive organs.