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6 March 2014 1:04 pm ,
Vol. 343 ,
Antiretroviral drugs can protect people from becoming infected by HIV. But so-called pre-exposure prophylaxis, or PrEP...
Two studies show that eating a diet low in protein and high in carbohydrates is linked to a longer, healthier life, and...
Considered an icon of conservation science, researchers at World Wildlife Fund (WWF) headquarters in Washington, D.C.,...
The new atlas, which shows the distribution of important trace metals and other substances, is the first product of...
Early in April, the first of a fleet of environmental monitoring satellites will lift off from Europe's spaceport in...
Since 2000, U.S. government health research agencies have spent almost $1 billion on an effort to churn out thousands...
Magdalena Koziol, a former postdoc at Yale University, was the victim of scientific sabotage. Now, she is suing the...
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ScienceShot: Jurassic Arthritis Was a Jawbreaker
15 May 2012 6:00 pm
Few things could slay a giant beast wielding teeth the size of kitchen knives, but a new discovery reveals that arthritis was one of them. Scientists examined the massive, pointy jaw of an ocean-dwelling pliosaur (artist's conception, right), a whale-sized reptile with a head like a crocodile, and concluded that the animal suffered from a degenerative joint condition that likely proved fatal. The disease wore away the left jaw hinge (left) of this 8-meter-long behemoth, causing its lower jaw to hang askew. The crooked-mouthed animal kept on biting, living long enough for its misaligned 20-centimeter-long teeth to etch grooves into the jawbone. But signs of an unhealed fracture indicate that the jaw eventually snapped apart, rendering the animal unable to feed, scientists report today in Palaeontology. The finding illustrates that the death of ancient beasts wasn't all ferocious battles and doomsday asteroids—they, too, suffered the mundane wear and tear of old age.
See more ScienceShots.