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Young Again: How One Cell Turns Back Time
Science, November 22

With every birth, cells begin anew. Scientists have found a biological mechanism underpinning the process in worms, which one day may be harnessed to restore our own damaged cells.

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An Interstellar Visitor Both Familiar and Alien
Science, November 22

Astronomers offer new details about Oumuamua, a probable asteroid arriving from beyond the solar system and leaving in a big hurry.

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Science Mishap Sends Bronx Students to the Hospital
Metro, November 22

Four students at an all-girls Catholic high school were injured when a flame grew out of control during a chemistry experiment.

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How to Cover Rocket Blastoffs With an iPhone
Business, November 22

Space shuttle launches were Earth-rattling when seen in person. Now rocket launches can be covered through an iPhone, says Kenneth Chang, who covers space for The Times.

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Live Event: A Supermoon Viewing Party
Insider, November 20

On Dec. 3, join two New York Times journalists, Columbia University’s leading astronomers and a former astronaut for a multisensory celebration of space.

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Questioning Evolution: The Push to Change Science Class
National, November 19

Legislation and lawsuits that reject scientific consensus on issues like evolution and climate change are changing the way science is taught in some schools.

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Raising Doubts about Evolution… in Science Class
Video, November 19

A growing skepticism of science has seeped into the classroom, and it’s revived attacks on one of the most established principles of biology – evolution.

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The Chemical Reaction That Cleans Everything
Science, November 17

Bleach may be common, but the molecular dance that makes it work is an intricate wonder.

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Same Oceans, Similar Prey, Two Very Different Necks
Science, November 17

Biologists studied cormorants and penguins that hunt fish in frigid seas and found that cormorants save energy by only moving their necks when seizing prey.

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‘Gene Drives’ Are Too Risky for Field Trials, Scientists Say
Science, November 16

New research casts doubt on a gene-editing strategy that scientists had hoped to use against invasive species and epidemic diseases.

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A Nearby Earth-Size Planet May Have Conditions for Life
Science, November 15

Astronomers have found a planet circling Ross 128, a quiet red star in our own galactic neighborhood.

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Yale Professors Race Google and IBM to the First Quantum Computer
Business, November 13

Robert Schoelkopf helped create technology that promises to deliver the machines of tomorrow at Google and IBM. Now, he is giving them some competition.

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Dream Chaser Space Plane Aces Glide Test
Science, November 13

Built by Sierra Nevada Corporation, the space plane that brings to mind NASA’s retired shuttles completed a successful test flight and landing on Saturday.

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The Bridge Wobbles. So Do You. That’s When the Trouble Starts.
Science, November 10

Mathematicians found that bridges wobble suddenly when a critical crowd threshold is exceeded, and developed a model to predict it in future bridges.

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NASA’s Rocket to Deep Space May Not Be Ready Until 2020
Science, November 9

Technological hiccups, a tornado and other factors have slowed the Space Launch System that NASA hopes will carry astronauts to the moon and Mars.

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Dinosaurs Might Not Be Extinct Had the Asteroid Struck Elsewhere
Science, November 9

Had the asteroid that doomed dinosaurs crashed nearly anywhere other than the coast of Mexico, they might not have gone extinct, researchers say.

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Congress Weighs Repeal of Tax Credit for Rare Disease Drugs
Science, November 8

Long untouchable, the incentive for development of orphan drugs is now a Republican target as lawmakers consider a broad tax overhaul.

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Richard Gordon, Astronaut Who Reached for Moon and Very Nearly Made It, Dies at 88
Obits, November 7

Mr. Gordon undertook a harrowing spacewalk in 1966 and orbited the moon in 1969, but he never achieved his dream of walking on the lunar surface.

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The Cool Beginnings of a Volcano’s Supereruption
Science, November 6

The eruption that caused California’s Long Valley Caldera to form likely started with magma that was chilled to a solid.

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Unlocking the Secrets of the Microbiome
Well, November 6

Restoring the proper balance of microscopic organisms in every organ is perhaps the most promising yet challenging task of modern medicine.

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Life on Mars: Return to Earth
Video, November 5

In the series finale of our 360 video series, "Life on Mars," the six crew members living in isolation for a NASA-funded research study exit their habitat in Hawaii after eight months. Follow their return from Mars-like conditions and how they adj...

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Inside Giza’s Great Pyramid, Scientists Discover a Void
Science, November 2

Using a technique from particle physics, researchers detected a 100-foot-long space within the monument, but Egyptologists questioned the discovery’s value.

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‘Unbelievable’: Heart Stents Fail to Ease Chest Pain
Science, November 2

With a sham treatment, British researchers found that a common and often costly cardiac procedure does not relieve discomfort.

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Astronomers Race to Study a Mystery Object From Outside Our Solar System
Science, October 27

The object, faster than known asteroids or comets, was first spotted by a telescope in Hawaii, and is leaving just as quickly as it arrived.

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Pope Says Astronauts See Earth ‘From the Eyes of God’
Foreign, October 27

Pope Francis spoke with crew members aboard the International Space Station about the view of the planet from space.

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After Witnessing Illness in India, She Seeks Ways to Fight It
Sunday Business, October 27

An immunologist grew up seeing the effects of leprosy and polio in her homeland. Now she runs a lab that studies why some cells resist disease and others succumb.

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Isabella L. Karle Dies at 95; Findings on Molecules Helped Husband Win Nobel
Obits, October 26

Her husband was disappointed that her work, which aided in the development of drugs for illnesses, was not cited by the Nobel committee.

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Drug Makers and Opioids
Letters, October 26

The Biotechnology Innovation Organization takes issue with a column by Nicholas Kristof.

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Paul Weitz, Astronaut on Skylab and Challenger, Dies at 85
Obits, October 25

Captain Weitz commanded the shuttle Challenger on its maiden voyage, and after it later exploded, he was among NASA officials who examined why.

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Ancient Skull May Be History’s Earliest Known Tsunami Victim
Science, October 25

The 6,000-year-old Aitape skull, found in Papua New Guinea in 1929, was excavated from sediments that contain telltale signs of ocean water left behind by a tsunami.