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Ryugu's samples reveal that water activity on asteroids lasted far longer than scientists thought, possibly reshaping theories of how Earth gained its oceans. A billion-year-old impact may have melted ancient ice, keeping asteroids wet and ...

Researchers discovered a new field of ancient tektites in South Australia, revealing a long-forgotten asteroid impact. These 11-million-year-old glass fragments differ chemically and geographically from other known tektites. Although the crater ...

Scientists discovered true teeth growing on the head of the spotted ratfish, a distant shark relative. The toothed structure, called a tenaculum, helps males hold onto females during mating. Genetic evidence shows these head teeth share the same ...

New research reveals that Earth's continents owe their stability to searing heat deep in the planet's crust. At more than 900°C, radioactive elements shifted upward, cooling and strengthening the landmasses that support life. This ancient heat ...

A parasitic worm uses static electricity to launch itself onto flying insects, a mechanism uncovered by physicists and biologists at Emory and Berkeley. By generating opposite charges, the worm and insect attract, allowing the leap to succeed far ...

Scientists have uncovered a 151-million-year-old midge fossil in Australia that challenges long-held views about insect evolution. Named Telmatomyia talbragarica, the fossil shows freshwater adaptations previously thought to exist only in marine ...

Humanity has reached the first Earth system tipping point, the widespread death of warm-water coral reefs, marking the beginning of irreversible planetary shifts. As global temperatures move beyond 1.5°C, the world risks cascading crises such as ice ...

Scientists from the Indian Institute of Science (IISc) and Caltech have finally solved a decades-old mystery about how photosynthesis really begins. They discovered why energy inside plants flows down only one of two possible routes -- a design that ...

Researchers in Italy discovered 400,000-year-old evidence that ancient humans butchered elephants for food and tools. At the Casal Lumbroso site near Rome, they found hundreds of bones and stone implements, many showing impact marks from butchery. .. ...

Supershear earthquakes, moving faster than seismic waves, could cause catastrophic shaking across California. USC researchers warn that many faults capable of magnitude 7 quakes might produce these explosive ruptures. Current construction standards . ...