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

Learn how resident orcas collaborate with local dolphins to hunt salmon while offering protection for their smaller cousins ...