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Hints of Human Evolution in Chimpanzees That Endure a Savanna’s Heat

Hints of Human Evolution in Chimpanzees That Endure a Savanna’s Heat

A male chimpanzee drinking at a waterhole in Fongoli, a Senegalese savanna. Temperatures at Fongoli can reach 110 degrees Fahrenheit or more.

Being Antisocial Leads to a Longer Life. For Marmots.

Being Antisocial Leads to a Longer Life. For Marmots.

Marmot pups near Crested Butte, Colo. Researchers tracked yellow-bellied marmots’ interactions for 13 years and found that more solitary marmots lived longer lives.

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.

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.

They Hunt. They Gather. They’re Very Good at Talking About Smells.

They Hunt. They Gather. They’re Very Good at Talking About Smells.

The Tembeling River in Malaysia’s Taman Negara National Park, near the home areas of hunter-gatherers and other groups that scientists studied to test the relationship between culture and the ability to name smells.

States Confront the Spread of a Deadly Disease in Deer

States Confront the Spread of a Deadly Disease in Deer

Game warden Keith Knighton, left, with a buck shot by Brodie McDonald during a special hunt to check for chronic wasting disease in deer in Montana last month.

What We Learned in 2017

What We Learned in 2017

Eclipse-watchers on Nye Beach in Newport, Ore., on Aug. 21.

Poisonous Prey Turned Into Hunter’s Defense

Poisonous Prey Turned Into Hunter’s Defense

Cnidarians, including corals and many jellyfish, feed and defend themselves with stinging capsules. Some sea slugs have evolved several lines of defense.

A Large Body of Water on Mars Is Detected, Raising the Potential for Alien Life

A Large Body of Water on Mars Is Detected, Raising the Potential for Alien Life

An artist’s rendering of the European Space Agency’s Mars Express spacecraft searching the planet’s south pole for liquid water.

A Crispr Conundrum: How Cells Fend Off Gene Editing

A Crispr Conundrum: How Cells Fend Off Gene Editing

Embryonic stem cells surrounded by feeder cells. When a team of scientists tried using Crispr to turn stem cells into neurons, they found that many of them died unless a cancer-fighting gene also was deactivated.

With 86% Drop, California’s Monarch Butterfly Population Hits Record Low

With 86% Drop, California’s Monarch Butterfly Population Hits Record Low

The population of western monarch butterflies in California dropped to a record low last year, according to a nonprofit conservation group.

Ice on the Surface of the Moon? Almost Certainly, New Research Shows

Ice on the Surface of the Moon? Almost Certainly, New Research Shows

New research suggests there is ice water up there, in craters at the poles where it’s dark and cold.

A Night Watchman With Wheels?

A Night Watchman With Wheels?

A promotional composite image from Knightscope showing the K5 Autonomous Data Machine.

In Footprints on Scotland’s Isle of Skye, Signs of a Dinosaur Playground

In Footprints on Scotland’s Isle of Skye, Signs of a Dinosaur Playground

A sauropod footprint found in Scotland was among several that included tracks left by smaller, two-legged meat-eaters. Their presence together upends a theory that the larger plant-eaters waded into shallow, muddy waters to evade predators.

The Final Hours of the Iceman’s Tools

The Final Hours of the Iceman’s Tools

A showcase reflects a reconstruction of Ötzi’s skull, center, and his body at the South Tyrol Museum of Archaeology in Bolzano, Italy.


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