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Search resuls for: "Miriam Fauzia"


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Millions of years ago, a simian ancestor of humanity decided to climb a tree. It may have been looking for a meal, escaping a predator or seeking a shady place to rest. Later, like anyone who has ascended high into a forest’s canopy, our relative discovered that getting down in one piece is less simple than it seems. Any human can relate to this, like climbing up a fireman’s pole, for example, is challenging,” said Nathaniel Dominy, an evolutionary biologist at Dartmouth. The researchers posit that this adaptation persisted even as early humans swapped out trees for grassland habitats, their versatile upper limbs now making it possible to forage, hunt and defend.
Persons: , Nathaniel Dominy, , Dominy Organizations: Dartmouth, Royal Society Open Science
For animals that humans almost drove into extinction, there’s a lot about whales we still don’t know. Consider the bowhead whale in particular. “But even today, we’re still learning very basic things about the reproductive cycle of animals like these. That would edge out elephant pregnancies — the longest known within the mammalian kingdom — by a month. Their findings, published on Wednesday in the journal Royal Society Open Science, illuminate the complexities underlying the whale’s population growth, which Dr. Lysiak hopes can guide conservation efforts, especially as an inhospitable climate looms.
Persons: , Nadine Lysiak, Lysiak Organizations: Royal Society Open Science
Some 50,000 to 10,000 years ago as ice sheets melted and the planet warmed, around 100 species of gigantic animals started to disappear without a trace. Paleontologists have sought to understand exactly how these animals died off, including iconic predators like the saber-tooth cat and the dire wolf. Some hypotheses suggest stiff competition for limited food aggravated by the arrival of humans and gray wolves. But new evidence suggests a bone disease that can debilitate modern cats and dogs, and even some of their humans, may have also played a role. In a paper published Wednesday in the journal PLoS One, researchers report that as the climate shifted, the bones of saber-tooth cats and dire wolves became riddled with defects associated with osteochondrosis dissecans, or OCD, a severe developmental disease where holes form in bone caused by developing tissue that never hardened.
Persons: osteochondrosis dissecans, Mairin Balisi, Raymond M, Alf Organizations: Alf Museum of Paleontology, Claremont , Calif Locations: Claremont ,
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