Last Build Date: Fri, 24 Mar 2017 07:44:01 GMTCopyright: Copyright 2017 The New York Times Company
Wed, 22 Mar 2017 18:00:14 GMTThe 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.
Thu, 23 Mar 2017 22:51:43 GMTThe 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.
Thu, 23 Mar 2017 19:41:42 GMTAn 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.
Tue, 21 Mar 2017 14:08:52 GMTA 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.
Mon, 20 Mar 2017 13:35:13 GMTAn 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.
Tue, 21 Mar 2017 22:28:18 GMTA 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.
Mon, 20 Mar 2017 19:14:41 GMTAn adult Galápagos penguin regurgitates food for a juvenile.Even fully fledged chicks will hound their parents for food, researchers find.
Thu, 16 Mar 2017 16:25:42 GMTA 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.
Thu, 23 Mar 2017 23:04:09 GMTDr. 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.
Thu, 23 Mar 2017 21:28:55 GMTThe 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.
Wed, 22 Mar 2017 21:07:07 GMTLaouli 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.
Wed, 22 Mar 2017 19:43:31 GMTDr. 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.
Wed, 22 Mar 2017 18:49:44 GMTA 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.
Wed, 22 Mar 2017 07:21:24 GMTThe president’s stance on science funding could have serious consequences.
Wed, 22 Mar 2017 00:25:52 GMTAnaplastic 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.
Mon, 20 Mar 2017 20:47:42 GMTOver 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.
Mon, 20 Mar 2017 16:57:56 GMTPaul 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.
Mon, 20 Mar 2017 16:37:23 GMTA 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.
Mon, 20 Mar 2017 16:27:41 GMTThe 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.
Fri, 17 Mar 2017 20:52:59 GMTTaking 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.
Fri, 17 Mar 2017 19:02:14 GMTIn general, the large size of some prehistoric animals in comparison to their modern counterparts had to do with evolutionary opportunity.
Fri, 17 Mar 2017 18:25:18 GMTFilms of the tests conducted in Nevada and the Marshall Islands from 1945 to 1962 are being restored and released to the public.
Fri, 17 Mar 2017 18:25:16 GMTThousands 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.
Fri, 17 Mar 2017 13:00:29 GMTRobert 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.
Tue, 21 Mar 2017 23:10:33 GMTA 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.