Hundreds of lizard species don’t have legs. Legless lizards had limbs at one point, but their arms and legs became smaller over millions of years until they disappeared entirely. Many legless lizards live underground, where it’s easier to slither thr
A proposed array of 200 small telescopes could detect Planet Nine by observing stellar occultations. Spaced across 1,000 km, they’d map Trans-Neptunian Objects and potentially confirm a planet or primordial black hole in the solar system’s outer reac
Chimpanzees Use Leaves as Hygiene Tools
Wild chimpanzees have been observed chewing leaves to clean themselves and treat wounds—a behavior once thought uniquely human and a sign of basic health care in animals
Thanksgiving did not become a national holiday in the United States until the fall of 1863 when President Abraham Lincoln issued a proclamation declaring that the last Thursday in November would be a day of national thanksgiving.
Ancient Roman concrete arches contained volcanic ash, which helped them self-heal when cracks formed by reacting with water. This made them incredibly durable, lasting for millennia.
