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What to Know About Trump’s Order to Dismantle the Clean Power Plan
Science, March 27

President Trump is set to undo key aspects of Obama’s climate legacy, targeting regulations for coal-fired power plants.

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They Mixed Science, Art and Costume Parties to Reveal Mysteries of the Sea
Science, March 27

The expeditions of William Beebe and his coed Department of Tropical Research are remembered at an upcoming show at The Drawing Center in New York.

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A Dream of Clean Energy at a Very High Price
Science, March 27

If a fusion experiment in France succeeds, it could shape the power plants of the future and contribute greatly to reducing planet-warming emissions.

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Hope Springs Early, but Not Eternal, for the Deadnettle — or for Us
Science, March 27

A naturalist in England found the early-blooming plant had moved up its schedule by nearly two months — a foreboding sign of a warming climate.

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Recalling Early Childhood Memories, or Not
Science, March 27

Remembering events from no earlier than age 3½ or 4 is typical, studies have found. The phenomenon is known as childhood amnesia.

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A 7.4 Quake in Southern California? A Long Fault Could Make It Likelier
Science, March 27

The Newport-Inglewood/Rose Canyon fault, extending from San Diego to Los Angeles, could rupture along its entire length, scientists have found.

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Wonders of a Marine National Monument
Science, March 27

A research cruise in the Pacific Remote Islands Marine National Monument produced video of alien-looking deep sea life.

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Wonders of the Deep
Video, March 27

The research vehicle Okeanos Explorer is collecting video and data from the Pacific Remote Islands Marine National Monument.

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Waking From Hibernation, the Hard Work of Spring Begins
Science, March 24

Emerging from the torpor of winter means a busy spring for these bears, bees, bats and squirrels.

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Visualizing the Cosmic Streams That Spew Meteor Showers
Science, March 24

Researchers recorded more than 300,000 meteoroid trajectories since 2010 to depict the drifting paths of meteor showers that Earth passes through.

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Headed North, Sandhill Cranes Squeeze In Where They Can
Science, March 24

The Platte River in Nebraska is an important layover for hundreds of thousands of the birds as they head toward their summer homes.

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Lewis Rowland, Leading Neurologist on Nerve and Muscle Diseases, Dies at 91
Science, March 23

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
Arts, March 23

The artist Eduardo Kac and Thomas Pesquet, a Frenchman on the International Space Station, have created art in space.

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How Comet 67P’s Face Changed During Its Trip Around the Sun
Science, March 23

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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Shaking Up the Dinosaur Family Tree
Science, March 22

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
Science, March 22

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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A New Form of Stem-Cell Engineering Raises Ethical Questions
Science, March 21

“Sheefs” will test the limits of current regulations, experts say, as embryolike structures are created directly from stem cells.

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Even Penguins Have Children Who Won’t Leave the Nest
Science, March 20

Even fully fledged chicks will hound their parents for food, researchers find.

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We Might Soon Resurrect Extinct Species. Is It Worth the Cost?
Science, March 20

Scientists disagree about whether bringing extinct species back from the dead will result in a net loss of global biodiversity.

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Quite a Distance Off
Crosswords & Games, March 19

Dr. Neil deGrasse Tyson and Andrea Carla Michaels help continue our celebration of the 75th anniversary of The New York Times Crossword.

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Bluebonnet Season Came Early in Texas This Spring
Science, March 17

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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Animals in Extra Large
Science, March 17

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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Watch U.S. Nuclear Tests
Video, March 17

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.

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U.S. Nuclear Weapons Tests Come to YouTube
Science, March 17

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

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Ancestral Climates May Have Shaped Your Nose
Science, March 16

A study led by Penn State researchers found more evidence of the relationship between nose shape and the climate where a person’s ancestors lived.

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Will You Attend the March for Science on Earth Day?
Interactive, March 16

We’d like to hear opinions about the march from scientists and people who work in the sciences, those who favor the demonstration as well as those who oppose it..

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A Search for Clues to What Causes Whale Strandings
Science, March 16

Researchers develop a model they hope can be used to understand how dolphins and whales react physiologically to threats from predators and people.

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How a Water Bear Survives, Even When It’s Dry
Science, March 16

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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The Desert Is Blooming
Video, March 16

Anza-Borrego Desert State Park is experiencing a rare super bloom. See it up close in 360° video.

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Large Sections of Australia’s Great Reef Are Now Dead, Scientists Find
Science, March 15

If most of the world’s coral reefs die, some of the richest and most colorful life in the ocean could be lost, along with huge sums from reef tourism.

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Ron Drever, Physicist Who Helped Confirm Einstein Theory, Dies at 85
Science, March 15

Dr. Drever, a Scotsman long associated with Caltech, played a key role in the detection of gravitational waves — space-time ripples predicted by Einstein.

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Swimming With a Brand New Leg
Science, March 14

A prototype of a prosthetic leg aims to allow amputees to move naturally in the water.

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A Start Date for the Bison Invasion of North America
Science, March 13

The serendipitous discovery of a fossil in northern Canada suggests that the furry, horned beasts crossed over from Asia more than 130,000 years ago.

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Igor Shafarevich, Russian Mathematician With a Mixed Political Legacy, Dies at 93
World, March 13

His work was internationally renowned, but Professor Shafarevich’s reputation as an anti-Soviet dissident was later tarnished by accusations of anti-Semitism.

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High Above, Drones Keep Watchful Eyes on Wildlife in Africa
Science, March 13

Drones seemed like the perfect anti-poaching tools. But deploying them has been far more difficult than conservationists had hoped.

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Poachers Beware: Drones Are Watching
Video, March 13

Africa is in the midst of a poaching crisis. Now conservationists are testing a high-tech tool to help track and stop poachers in Malawi’s Liwonde National Park.

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How to Kill Germs in the Laundry
Science, March 13

Some studies suggest that water does not have to be as hot as often thought to get clothes acceptably bacteria-free. And the dryer helps.

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How Darwin Evolved: 25,540 Paper Fragments Tell the Story
Arts, March 13

Researchers at the American Museum of Natural History have used superfast computers to reorganize the raw notes that formed “On the Origin of Species.”

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What Our Cells Teach Us About a ‘Natural’ Death
Opinion, March 13

Our biology may offer a challenge to the common wisdom about the artificial extension of life.

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George A. Olah, Carbon Compounds Pathfinder, Dies at 89
Science, March 12

Dr. Olah’s advances in the understanding of hydrocarbons have been used in an array of applications, including the development of gasoline that burns more cleanly.

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Meet Diego, the Centenarian Whose Sex Drive Saved His Species
World, March 11

By fathering hundreds, a giant tortoise in the Galápagos Islands reversed the threat of extinction. Another, earning the name Lonesome George, was unable to do the same.

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New Guideline Will Allow First-Year Doctors to Work 24-Hour Shifts
Science, March 10

Until July, the current maximum shift is 16 hours for first-year residents. The maximum workload will remain 80 hours per week.

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From Flight 370 Hunt, New Insight Into Indian Ocean’s Unknown Depths
Science, March 10

The search for the Malaysia Airlines jetliner helped create 3-D maps of the ocean’s topological complexity, at a level of detail never before achieved.

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The Rice-Size Fly That Hits the Bull’s-Eye Every Time
Science, March 10

With its sharp vision and unique hunting strategy, the robber fly is an imposing aerial predator.

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A Lake Turned Pink in Australia. It’s Not the Only One.
Science, March 10

Images of a hot-pink lake in Melbourne have taken over the internet this week. The coloration is the result of a salt-loving microbe’s attempt to make its own sunscreen.

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Flecks of Extraterrestrial Dust, All Over the Roof
Science, March 10

A jazz musician from Norway hunted bits of cosmic debris for eight years and found it everywhere. Turns out, tons of it land every day.

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Pan, Moon of Saturn, Looks Like a Cosmic Ravioli (or Maybe a Walnut)
Science, March 10

In photographs by NASA’s Cassini spacecraft, the closest images ever taken, the tiny, wrinkly moon has a deep ridge that could be a couple of miles high.

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Emily Coates’s ‘Incarnations’: Quantum Leaps, When Physics Meets Dance
Arts, March 10

The former New York City Ballet dancer’s new work combines postmodern movement and the Higgs boson particle.

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Trump’s Climate Views: Combative, Conflicting and Confusing
Science, March 10

The president has spoken often about climate change, energy, coal and wind turbines. His statements are often provocative but not always consistent. A sampling.

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First Underwater Video of Elusive True’s Beaked Whales
Science, March 9

Beaked whales, like those filmed in the Azores in 2013, spend much of their time deep underwater, which makes study difficult.

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How Did Aborigines Get to Australia? DNA Helps Solve a Mystery
Science, March 8

Scientists used a genetic test to discover that the ancestors of Aboriginal Australians arrived 50,000 years ago and spread along the coastlines.

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Our Universe’s Very Dusty Early, Early Beginnings
Science, March 8

Far away, in a constellation called Sculptor, astronomers have glimpsed the universe’s oldest dust. It’s 13.2 billion years old.

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Years of Ethics Charges, but Star Cancer Researcher Gets a Pass
Science, March 8

Dr. Carlo Croce was repeatedly cleared by Ohio State University, which reaped millions from his grants. Now, he faces new whistle-blower accusations.

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Blue Origin, Jeff Bezos’s Moon Shot, Gets First Paying Customer
Technology, March 7

In about five years, Eutelsat, a satellite TV provider, will strap one of its satellites to a new Blue Origin rocket to be delivered to space.

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In the Caves of Ancient Humans, Stories Told Dot by Dot
Science, March 7

About 38,000 years ago, archaeologists say, some of Europe’s earliest modern humans were making art that evokes the pointillism of Georges Seurat.

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Activists Rush to Save Government Science Data — If They Can Find It
Science, March 6

The Trump administration has begun changing some government websites. A group of concerned citizens has been working to preserve data it sees as politically vulnerable.

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Volkswagen’s Emissions Fraud May Affect Mortality Rate in Europe
Science, March 6

Software that allowed the auto manufacturer to skirt environmental rules could lead to 1,200 deaths because of excess air pollution, researchers said.

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Figuring Out When and Why Squids Lost Their Shells
Science, March 6

A study suggests it became advantageous to lose a shell’s encumbering protection while gaining the speed and agility to evade predators and catch prey.

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Why We Can’t Look Away From Our Screens
Science, March 6

In a new book, the social psychologist Adam Alter warns that our devotion to digital devices has morphed into something very much like addiction.

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Why We Can’t Look Away From Our Screens
Science, March 6

In a new book, the social psychologist Adam Alter warns that our devotion to digital devices has morphed into something very much like addiction.

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Exciting Microbe Research? Temper That Giddy Feeling in Your Gut
The Upshot, March 6

Research on the microbiome is a hot topic, but it’s not easy, and there are many ways to foul things up.

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On Galápagos, Revealing the Blue-Footed Booby’s True Colors
Science, March 6

With no real predators, the birds live proud, public lives. That accessibility has proved a bonanza for scientists, casting light on their mating habits and even why the shade of their feet matters.

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On Galápagos, Revealing the Blue-Footed Booby’s True Colors
Science, March 6

With no real predators, the birds live proud, public lives. That accessibility has proved a bonanza for scientists, casting light on their mating habits and even why the shade of their feet matters.

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Dr. Thomas E. Starzl, Pioneering Liver Surgeon, Dies at 90
Science, March 5

In the 1960s, Dr. Starzl performed the first successful liver transplant on a human patient and later helped advance drugs that made organ transplants more survivable.

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How the Amazon’s Cashews and Cacao Point to Cultivation by the Ancients
Science, March 3

A study that examined domesticated trees and plants, including in areas near archaeological sites, supports the idea that indigenous humans helped shape the forest.

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Spring Amphibians, on the Move, Could Use Some Crossing Guards
Science, March 3

Frogs and salamanders, wakened a bit sooner than usual this year, are walking to their mating areas. Volunteers help many make it past perilous traffic.

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The Secret to a Really Crisp Apple
Science, March 3

Differences in cell walls result in some apples being mealy and some being magnificent.

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SpaceX Plans to Send Tourists to the Moon
Opinion, March 3

Ready for liftoff?

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First Seen 30 Years Ago, a Supernova Refuses to Be Ignored
Science, March 3

New images from the Hubble Space Telescope have been released of the supernova called SN1987A, first detected in February 1987.

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The Woolly Mammoth’s Last Stand
Science, March 2

A new study shows how an endangered or declining species may result in an irreversible genetic meltdown.

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Sydney’s Swelter Has a Climate Change Link, Scientists Say
Science, March 2

Heat waves like those that affected southeastern Australia early this year are much more likely with human-caused global warming, a study has found.

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Scientists Say Canadian Bacteria Fossils May Be Earth’s Oldest
Science, March 1

Ancient rocks have yielded tiny fossil-like formations up to 4.2 billion years old, researchers reported. But some experts are skeptical.

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Edward E. David Jr., Who Elevated Science Under Nixon, Dies at 92
Science, February 28

Dr. David sought to make science more relevant and accessible to presidents and to the public, saying, “We can’t leave science and technology to the experts.”

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In California, a Move to Ease the Pressures on Aging Dams
Science, February 28

A tract of farmland, inadvertently flooded, shows a “softer” path to managing the state’s immense water system in an era of climate change.