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Showing posts from January 5, 2017

Origins of Elusive 'Ghost Shark' Revealed

A 280-million-year-old skull of a so-called ghost shark has helped researchers determine exactly how chimaeras — mysterious, mostly deep-sea fish with wing-like fins and pointy snouts — are related to sharks, a new study finds. The ancient skull, belonging to the 4-foot-long (1.2 meters) shark-like fish Dwykaselachus oosthuizeni, was a rare find, as this animal's skeleton is made of cartilage, which rarely fossilizes, the researchers said. An anatomical examination showed that the animal had a surprising number of similarities to modern chimaeras — also called ghost sharks for their silvery white exterior and overall appearance — suggesting that the two types of creature are related, the researchers said.


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Low Iron Levels May Be Linked to Hearing Loss

When people have low levels of iron in their blood, they may develop a condition called iron deficiency anemia, which is known to have wide-ranging effects throughout the body, and now, a new study suggests that this condition may be linked to hearing loss as well. In the study, adults who had iron deficiency anemia were more than twice as likely to develop a specific type of hearing loss, called combined hearing loss, compared with those who did not have iron deficiency anemia, according to the study. Based on the medical records, the researchers identified the people in the study who had iron deficiency anemia as well as any diagnoses of hearing loss.


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Why It Pays to Be Vague When Negotiating Prices

In negotiating, is a more precise opening offer always better? It might be — but it depends on the experience level of the person with whom you're negotiating, a recent study from Germany found. In the study, researchers showed that increasing the precision of an opening offer improved a person's negotiations with amateurs, but could actually backfire on negotiations with experts.


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Top Scientists Urge Trump to Uphold Iran Nuclear Deal

Nobel laureates and other top scientists are imploring Donald Trump to keep the Iran nuclear deal intact when he becomes president. In an open letter, 36 scientists — including one who helped design the first hydrogen bomb — asked the president-elect to preserve the deal, known as the Joint Comprehensive Plan of Action (JCPOA). "Indeed it makes it much easier for you to know if and when Iran heads for a bomb.


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Gut Decision: Scientists Identify New Organ in Humans

A mighty membrane that twists and turns through the gut is starting the new year with a new classification: the structure, called the mesentery, has been upgraded to an organ.


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London museum bids farewell to Dippy the dinosaur

Britain's Natural History Museum bids farewell to its most famous exhibit, Dippy the diplodocus, on Wednesday after almost four decades of greeting visitors before being dismantled ahead of a national tour. For 35 years, the huge skeleton cast, 4.25 metres (14 ft) high and 21 metres long, has been the first sight visitors see when they enter the London museum's main entrance. From the end of 2020, a bronze cast of Dippy will then go on display outside the museum.


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