Doctors are issuing warnings about regular habits shared by millions of Americans that, unbeknownst to them, are significantly raising their chances of having a stroke. One American dies of a stroke every three minutes and 14 seconds. Ischemic stroke, which makes up about 87 percent of all strokes, results from a clot that blocks a blood vessel supplying the brain, …
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Dinosaur DNA remains out of reach, so scientists hunt rarer clues: soft tissues entombed in bone. Using synchrotron X-rays, researchers visualized iron-rich casts of blood vessels inside a healing T. rex rib, capturing the vascular surge that follows trauma. Credit: Shutterstock Researchers uncovered blood vessels in Scotty, the largest T. rex fossil. High-powered x-rays revealed mineralized tissues that deepen our …
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A broken bone sets off a repair job inside the body. New blood vessels grow in, bringing oxygen and nutrients to rebuild the damage. Scientists have now traced that same process in a Tyrannosaurus rex rib from about 67 million years ago, using powerful X-rays to see mineral “shadows” where blood once flowed. They focused on a deep …
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Despite the fact that much of the current research in paleontology focuses on trying to find traces of organic remains in fossils, dinosaur DNA has unfortunately never been recovered. A lot of what we know about dinosaurs comes from preserved bones and teeth that are dug out of the ground. These hard tissues alone, however, are limited in the information …
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