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

The largest dietary study comparing children’s diets shows that eating a vegetarian and vegan diet can work well for growing children, provided families stay on top of critical nutrients. Learn more about it. 

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

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

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

Learn how chemical clues reveal a mosasaur was hunting in freshwater rivers as the Cretaceous seaway receded.

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

Learn why purrs say more about a cat's identity than its meows, and how domestication forever changed the way cats communicate with their owners.

Learn the untold story of the hammock, and how it was used by both Indigenous cultures and European colonizers.

Learn how the discovery of a young planet orbiting two suns is revealing how worlds form and survive in binary star systems.

Learn more about the creation of fire, and how new artifacts show that fire was used tens of thousands of years earlier than previously believed.

Learn more about how researchers can take evidence from the past to better shape our idea of what Neanderthals looked like.

Meet Salwasiren qatarensis, a small, ancient sea cow species whose fossils were found in Qatar, in one of the world’s biggest marine mammal bonebeds.

Learn more about brown dwarfs, the cosmic misfits that blur the line between planet and star. 

Learn what happens to cells inside the nose during an RSV infection, and why infants are so vulnerable to the virus. 

Learn about theobromine, a chemical compound in dark chocolate that is linked to anti-aging.

Learn how high caffeine levels and overlooked stimulants in energy drinks may strain the heart and elevate stroke risk.

Learn how a particle born in the sun’s core left a measurable flash of light two kilometers beneath Earth’s surface.

Learn how chemical signatures in the Hjortspring boat’s caulking pointed researchers toward its Baltic origins. 

Learn how new discoveries about whale language also raise ethical and legal questions.

Learn more about mammal monogamy rates, which support the theory that the primary mating pattern in Homo sapiens is monogamy.

Learn about the molecules and materials found in samples of asteroid Bennu, including sugars, space gum, and an abundance of stardust.