For thousands of years, Utah’s Great Salt Lake reflected only natural shifts in climate and water flow. But fresh sediment analyses show that in just two centuries, human activity forced the lake into states Read More
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In the sunbaked badlands of Arizona’s Petrified Forest, scientists uncovered a tiny jawbone that turned out to be North America’s oldest known pterosaur—a flying reptile that soared the skies over 209 million years Read More
Astronomers using the LOFAR radio array have detected a vast “mini-halo” of high-energy particles around galaxy cluster SpARCS1049, whose light has traveled 10 billion years to reach us. The find doubles the previous distance record and Read More