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

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

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

Learn how motion sensors and GPS tracking uncovered how raccoons weigh risk against reward.

The largest dietary study comparing children’s diets shows that eating a vegetarian and vegan diet can work well for growing ...

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