Science

A 225-million-year-old fossil discovered in Africa is rewriting the story of how dinosaurs first emerged. The fossilized leg bone, belonging to a little-known group of reptiles called silesaurs, challenges long-standing beliefs about the size and evolution of the earliest dinosaurs and their closest relatives. A Forgotten Fossil Resurfaces The fossil was first unearthed in 1963 in what is now Zambia …

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All living tissues give off photons as excited molecules shed excess energy. The phenomenon is so subtle – roughly a million times dimmer than the threshold of human vision – that researchers call it ultra-weak photon emission (UPE). Because the brain consumes an exceptionally high metabolic budget and is packed with photoactive compounds such as flavins and serotonin, scientists have …

Astronomers have detected signs of complex organic molecules, the precursors to the building blocks of life as we know it, in a planet-forming disk around a distant star. The findings imply that the chemical seeds of life are constructed in space and are then spread to young or newly forming planets. Using the Atacama Large Millimeter/ submillimeter Array (ALMA), a …

The Tintina fault stretches 1,000 kilometers (621 miles) across northern Canada, crossing the Yukon and ending in Alaska. The fault is thought to have been dormant for 40 million years, but that thinking is challenged by a new study that suggests a major earthquake may be imminent. Researchers from the University of Victoria and the University of Alberta in Canada …

In a groundbreaking study published in the Journal of Human Evolution, researchers have uncovered fascinating details about human evolution in ancient Asia through fossilized teeth discovered at the Hualongdong site in Anhui Province, China. The findings, led by Professor Wu Xiujie, director of the Hualongdong excavations, challenge established theories of Homo evolution, particularly in Asia during the Middle Pleistocene era. …

A hidden lake beneath the Greenland Ice Sheet unexpectedly drained more than a decade ago, fracturing the ice surface and forming a large crater — an event only recently uncovered by Earth-observing satellites. The massive ice sheet, located in a remote region of northern Greenland, harbors a subglacial lake that appears to have flooded in 2014, releasing 23.8 billion gallons …

SpaceX just sent another batch of its Starlink broadband satellites into the final frontier. A Falcon 9 rocket carrying 19 Starlink craft lifted off from California’s foggy Vandenberg Space Force Base today (July 31) at 2:35 p.m. EDT (1835 GMT; 11:35 a.m. local California time). The rocket’s first stage came back to Earth as planned about 8.5 minutes later, touching …

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For over 100 years, quantum physics has taught us that light is both a wave and a particle. Now, researchers at the Massachusetts Institute of Technology (MIT) have performed a daring experiment using single atoms that confirms that, while light can behave as either a particle or a photon, it cannot be seen to behave as both at the same …