Researchers trace the roots of kissing back over 21M years (Fiona McAllister Photography/Getty Images) Kissing first appeared over 21 million years ago in [...]

Black hole images could challenge Einstein's theory Future black hole images may be detailed enough to test Albert Einstein's theory of general relativity [...]

Parasitic ants use chemicals to incite worker revolt Parasitic ants have been observed using chemical warfare to take over colonies of related species, [...]

Early adversity linked to behavior problems in dogs (Hanneke Vollbehr/Getty Images) Puppies that experience adversity before they are six months old are more [...]

Study: Dry ice blocks create gullies on Mars Researchers have discovered that mysterious gullies on Mars are carved by blocks of dry ice, [...]

AI tool shows promise in predicting sepsis risk in children An AI model developed using more than 1.6 million medical records shows promise [...]

Study explains the science behind onion-induced tears Researchers at Cornell University have discovered why onions make people cry, using high-speed videography and computer [...]

Study links teen social media use to poorer cognition (Amr Bo Shanab/Getty Images) A study published in JAMA (Journal American Medical Association) shows that preteens who [...]

Naked mole rats' DNA could hold key to long life Victoria GillScience correspondent, BBC News Washington Post via Getty Images Naked mole rats [...]

Study: Dogs can naturally learn language skills Dogs can naturally understand words and their functions, a skill previously thought to be unique to [...]