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China’s Giant Salamanders Pose a Conservation Conundrum

China’s Giant Salamanders Pose a Conservation Conundrum

A Chinese giant salamander, in a glass enclosure in Zhangjiajie, China. There are as many as eight distinct species, but farming is muddling them into a single hybridized population.

How Long Can We Live? The Limit Hasn’t Been Reached, Study Finds

How Long Can We Live? The Limit Hasn’t Been Reached, Study Finds

In Acciaroli, a hamlet in southern Italy, about one-in-60 residents are over the age of 90. A survey of about 4,000 Italians found that mortality rates in old age plateau around 105, suggesting that the ceiling for human lifespan has not yet been reached.

Visitors From the Ocean’s Twilight Zone

Visitors From the Ocean’s Twilight Zone

A transparent hatchetfish, retrieved by researchers from the Woods Hole Oceanographic Institution, which is seeking to understand better the creatures that occupy the sea from 600 to 3,300 feet deep.

A Massacre Frozen in Time: Skeletons in Sweden Reveal Ancient Attack

A Massacre Frozen in Time: Skeletons in Sweden Reveal Ancient Attack

Remains of victims found by archaeologists, who determined the villagers were slaughtered in their homes on the island of Öland in the Baltic Sea.

The Rational Choices of Crack Addicts

The Rational Choices of Crack Addicts

Carl Hart, an associate professor at Columbia University, is the author of the book “High Price,” a mix of memoir and scientific research about drug addiction.

Women’s Views on Women Who Are Ovulating

Women’s Views on Women Who Are Ovulating

Participants in a study of the effects of ovulation were shown these two photos and asked which woman would be more likely to entice a dating partner.

Silicon Valley’s Water Conservation Conundrum

Silicon Valley’s Water Conservation Conundrum

­“Silicon Valley has been talking about water technology since they started talking about clean tech, but there are no new big ideas,” said Joel Makower, the chairman and executive editor of the GreenBiz Group.

Eske Willerslev Is Rewriting History With DNA

Eske Willerslev Is Rewriting History With DNA

Dr. Eske Willerslev, director of the Center for GeoGenetics at the University of Copenhagen, earlier this month.

F.D.A. to Expand Medication-Assisted Therapy for Opioid Addicts

F.D.A. to Expand Medication-Assisted Therapy for Opioid Addicts

Alex M. Azar II, the secretary of health and human services, speaking to the National Governors Association on Saturday in Washington. The Trump administration wants to expand access to so-called medication-assisted treatment for combating opioid addiction.

Drought and Drone Reveal ‘Once-in-a-Lifetime’ Signs of Ancient Henge in Ireland

Drought and Drone Reveal ‘Once-in-a-Lifetime’ Signs of Ancient Henge in Ireland

Signs of a henge, a man-made enclosure from thousands of years ago thought to serve as a gathering place, were photographed by a camera-enabled drone on Monday.

Gaia’s Map of 1.3 Billion Stars Makes for a Milky Way in a Bottle

Gaia’s Map of 1.3 Billion Stars Makes for a Milky Way in a Bottle

A view of the Milky Way and neighboring galaxies, containing more than a billion stars, released by the European Space Agency’s Gaia mission.

Orcas of the Pacific Northwest Are Starving and Disappearing

Orcas of the Pacific Northwest Are Starving and Disappearing

Orcas from pod J in Puget Sound just west of Seattle. The number of orcas in the area, listed as endangered since 2005, has dwindled to a 30-year low.

Mars Is Frigid, Rusty and Haunted. We Can’t Stop Looking at It.

Mars Is Frigid, Rusty and Haunted. We Can’t Stop Looking at It.

A lunar eclipse, visible in Sumatra, Indonesia on Saturday, could be seen alongside Mars, which is the closest it's been to Earth in 15 years.

1 Hen, 76 Ducklings: What’s the Deal With This Picture?

1 Hen, 76 Ducklings: What’s the Deal With This Picture?

Dozens of common merganser ducklings following Mama on Lake Bemidji in Minnesota.


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