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Last Build Date: Fri, 24 Mar 2017 07:44:01 GMT

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Shaking Up the Dinosaur Family Tree

Wed, 22 Mar 2017 18:00:14 GMT

The proposed new family tree of dinosaurs. The group to the left is for close relatives but not true dinosaurs. The old tree grouped the theropods, purple, with the Saurischia, green, and viewed the Saurischia and the Ornithischia as the two major branches of the tree. The scale to the left shows the placement of the tree in geological time. A is the branchpoint that includes all the dinosaurs, B represents the joint ancestor of Ornithischia and the theropods, and C is the joint ancestor of Saurischia and an early group known as herrerasaurs.A Ph.D candidate and a computer program that took five minutes to run may upend the dinosaur classification system that has been used for more than a century.


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A Scholarly Sting Operation Shines a Light on ‘Predatory’ Journals

Thu, 23 Mar 2017 22:51:43 GMT

The résumé of the fictional Anna O. Szust.A group of researchers created a ruse to draw attention to the seamy side of open-access journals, some of which will publish just about anything for a fee.


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Trilobites: How Comet 67P’s Face Changed During Its Trip Around the Sun

Thu, 23 Mar 2017 19:41:42 GMT

An image of Comet 67P/Churyumov-Gerasimenko taken by the Rosetta spacecraft in July 2015. The arrow indicates a plume that scientists believe was related to the collapse of a cliff on the comet’s surface.During the two years that the Rosetta spacecraft stalked the comet, it observed cliffs that collapsed, boulders that moved and eruptions of dust and gas.


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Matter: A New Form of Stem-Cell Engineering Raises Ethical Questions

Tue, 21 Mar 2017 14:08:52 GMT

A scan of the surface of a human embryonic stem cell.“Sheefs” will test the limits of current regulations, experts say, as embryolike structures are created directly from stem cells.


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We Might Soon Resurrect Extinct Species. Is It Worth the Cost?

Mon, 20 Mar 2017 13:35:13 GMT

An illustration of an extinct rat kangaroo, published in 1825. Researchers recently analyzed the costs and benefits of re-establishing and maintaining 16 species in Australia and New Zealand that went extinct in the last millennium.Scientists disagree about whether bringing extinct species back from the dead will result in a net loss of global biodiversity.


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Trump Lays Plans to Reverse Obama’s Climate Change Legacy

Tue, 21 Mar 2017 22:28:18 GMT

A coal-fired power plant in Ghent, Ky. President Trump is expected to order a withdrawal and rewriting of Obama-era regulations intended to shut down hundreds of heavily polluting coal-fired plants.The White House is preparing to dismantle major policy actions of the Obama era, including a plan to close hundreds of heavily polluting power plants.


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Even Penguins Have Children Who Won’t Leave the Nest

Mon, 20 Mar 2017 19:14:41 GMT

An adult Galápagos penguin regurgitates food for a juvenile.Even fully fledged chicks will hound their parents for food, researchers find.


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Trilobites: How a Water Bear Survives, Even When It’s Dry

Thu, 16 Mar 2017 16:25:42 GMT

A scanning electron micrograph of a tardigrade walking over moss. Tardigrades, known as water bears, can endure having their bodies completely dried out, a process called desiccation. The creature pulls its eight legs and head into its exoskeleton and forms a tiny ball.The microscopic animals were found to produce a unique protein that coats the molecules in their cells in a glasslike substance.


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Lewis Rowland, Leading Neurologist on Nerve and Muscle Diseases, Dies at 91

Thu, 23 Mar 2017 23:04:09 GMT

Dr. Lewis P. Rowland with residents at the University of Pennsylvania School of Medicine. In 1973, he went to Columbia, where he was chairman of the neurology department for 25 years, retiring in 1998.Dr. Rowland, who had a special interest in A.L.S., or Lou Gehrig’s disease, refused to be interrogated by investigators in the McCarthy era.


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A Space Odyssey: Making Art Up There

Thu, 23 Mar 2017 21:28:55 GMT

The artwork “Inner Telescope,” floating in space.The artist Eduardo Kac and Thomas Pesquet, a Frenchman on the International Space Station, have created art in space.


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New Vaccine Could Slow Disease That Kills 600 Children a Day

Wed, 22 Mar 2017 21:07:07 GMT

Laouli Houzeïnatou, 20, and her son, Hanissa Moustaphe, took part in the clinical study of the new vaccine. Laouli was monitored throughout her pregnancy.A lower-cost vaccine provides strong protection against rotavirus, a diarrheal disease, and could be particularly useful in poorer countries, researchers said.


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As Rivals Stand Silent, One Health Insurer Protests G.O.P. Plan

Wed, 22 Mar 2017 19:43:31 GMT

Dr. J. Mario Molina, chief executive of Molina Healthcare, with a portrait of his father, who founded the company. Dr. Molina has publicly criticized the House health care bill, which he says could strip away coverage for millions of clients and cause turmoil for the insurance industry.Dr. J. Mario Molina, one of the few insurance executives to criticize the House bill publicly, says it could harm insurers and patients alike.


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Arctic’s Winter Sea Ice Drops to Its Lowest Recorded Level

Wed, 22 Mar 2017 18:49:44 GMT

A research plane surveying ice thickness in the Arctic in August. Much of the ice in the region appears to be thinner than normal.Much of the ice also appears to be thinner than normal — further signs of climate change’s effects on the region.


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Op-Ed Contributor: Why Trump’s N.I.H. Cuts Should Worry Us

Wed, 22 Mar 2017 07:21:24 GMT

The president’s stance on science funding could have serious consequences.


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9 Deaths Are Linked to Rare Cancer From Breast Implants

Wed, 22 Mar 2017 00:25:52 GMT

Anaplastic large-cell lymphoma is likelier to occur with textured implants, above, than with smooth implants, the F.D.A. said.The problem is more likely to occur with textured implants than with smooth implants, the F.D.A. said, and it is usually treatable and not often fatal.


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News Analysis: An End to Heart Disease? Not Quite

Mon, 20 Mar 2017 20:47:42 GMT

Over about two years of study, researchers found that Repatha, when added to statin therapy, further reduced the risk of heart attack or stroke by about 15 percent.The introduction of a new class of cholesterol drugs led some experts to believe that we might be able to virtually eliminate heart attacks. But it hasn’t worked out that way.


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Popular Prostate Cancer Therapy Is Short, Intense and Unproven

Mon, 20 Mar 2017 16:57:56 GMT

Paul Kolnik, a photographer, underwent stereotactic body radiation therapy for his prostate cancer, which is now in remission.Researchers hope a study will shed some light on a cancer treatment, using radiation, that is growing in popularity and surrounded by questions.


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Take a Number: More Grandparents Than Ever

Mon, 20 Mar 2017 16:37:23 GMT

A grandmother and granddaughter at play in Chevy Chase, Md. The number of grandparents in the American population has grown by 24 percent since 2001.Since 2001 the number of grandparents has grown by 24 percent, partly as a result of the aging of the baby boom generation.


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The Death and Rebirth of the Duncan Grapefruit

Mon, 20 Mar 2017 16:27:41 GMT

The classic Duncan grapefruit has become virtually impossible to find beyond a few places like Hollieanna Groves in Maitland, Fla.Once a breakfast staple, this white, seed-packed variety of the fruit has all but disappeared. Yet there are hints of a small-scale revival.


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Trilobites: Bluebonnet Season Came Early in Texas This Spring

Fri, 17 Mar 2017 20:52:59 GMT

Taking photographs with bluebonnets is “a rite of passage for any Texan,” a photographer said.Flowering plants that are blue are rare in nature. But Texas bluebonnets put on an annual show in pastures, parks and highway medians.


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Q&A: Animals in Extra Large

Fri, 17 Mar 2017 19:02:14 GMT

In general, the large size of some prehistoric animals in comparison to their modern counterparts had to do with evolutionary opportunity.


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U.S. Nuclear Weapons Tests Come to YouTube

Fri, 17 Mar 2017 18:25:18 GMT

Films of the tests conducted in Nevada and the Marshall Islands from 1945 to 1962 are being restored and released to the public.



Watch U.S. Nuclear Tests

Fri, 17 Mar 2017 18:25:16 GMT

Thousands of films showing U.S. atmospheric nuclear tests between 1945 and 1962 have been declassified. Scientists are studying them and posting them for all to see.



Cholesterol-Slashing Drug Can Protect High-Risk Heart Patients, Study Finds

Fri, 17 Mar 2017 13:00:29 GMT

Robert Johnson 51, with his twin 6-year-old daughters, Brooke, left, and Bobbi on vacation in Florida. Mr. Johnson feared dying young of a heart attack like his father. “I always felt there was a ticking time bomb in my heart,” he said.Patients who took the drug, Repatha, were significantly less likely to have heart attacks or strokes, researchers concluded. But its high cost will be an issue.


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Burrowing Under Luminous Ice to Retrieve Mussels

Tue, 21 Mar 2017 23:10:33 GMT

A snowmobiler made his way across an expanse of ice and tundra in northern Quebec to harvest mussels.When the winter tide goes out on a northern Canadian bay, some Inuit clamber into the ice caves below to harvest fresh food.


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