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Every 202,500 Years, Earth Wanders in a New Direction

Every 202,500 Years, Earth Wanders in a New Direction

Earth’s gravitational interactions with other planets — particularly Venus, because it is very near — affect the shape of its orbit.

To See the Best Christmas Trees, You’ll Need Scuba Gear

To See the Best Christmas Trees, You’ll Need Scuba Gear

A Spirobranchus worm, commonly called the Christmas tree worm, on a coral reef near Eilat, Israel.

Bulwark Against an Abortion Ban? Medical Advances

Bulwark Against an Abortion Ban? Medical Advances

A march in Washington of women demanding legalization of abortion in 1971. With President Trump about to nominate a second justice to the Supreme Court, legal experts are debating what a more conservative court would mean for abortion rights.

Largest King Penguin Colony in the World Drops by 90%

Largest King Penguin Colony in the World Drops by 90%

The colony of king penguins on the Île aux Cochons, or Pig Island, in 1982, when researchers last counted its population.

NASA Budgets for a Trip to the Moon, but Not While Trump Is President

NASA Budgets for a Trip to the Moon, but Not While Trump Is President

Vice President Mike Pence at the National Space Council’s first meeting in Chantilly, Va., in October.

Elephants Are Very Scared of Bees. That Could Save Their Lives.

Elephants Are Very Scared of Bees. That Could Save Their Lives.

A bee’s sting won’t hurt an elephant’s tough hide, but bees can swarm and wound more sensitive places like the trunk, eyes and mouth.

How a Church Deacon Found the Biggest Prime Number Yet (It Wasn’t as Hard as You Think)

How a Church Deacon Found the Biggest Prime Number Yet (It Wasn’t as Hard as You Think)

Jon Pace is the discoverer of the largest known prime number, 23.2 million digits long.

NASA Names Astronauts for Boeing and SpaceX Flights to International Space Station

NASA Names Astronauts for Boeing and SpaceX Flights to International Space Station

The astronauts named by NASA to fly on commercial spacecraft made by Boeing and SpaceX to and from the International Space Station: From left, Sunita Williams, Cmdr. Josh Cassada, Eric Boe, Lt. Col. Nicole Mann, Christopher Ferguson, Douglas Hurley, Col. Bob Behnken, Col. Mike Hopkins and Cmdr. Victor Glover.

Never Mind the Summer Heat: Earth Is at Its Greatest Distance From the Sun

Never Mind the Summer Heat: Earth Is at Its Greatest Distance From the Sun

Sweltering temperatures on the surface of Earth’s northern hemisphere notwithstanding, the sun and Earth are currently three million miles farther from each other than when they’re closest.

New Insights From Old DNA, Flowing Ants, Insecticides in Question

New Insights From Old DNA, Flowing Ants, Insecticides in Question

A computer-generated image of a single Neanderthal toe bone found in a Siberian cave in 2010.

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.

New Wearable Sensor Can Collect Data From Sweat

New Wearable Sensor Can Collect Data From Sweat

Jo-Wilfried Tsonga of France wiped sweat from his face during the Australian Open. Researchers say their new wearable sensor can measure perspiration for conditions like dehydration and fatigue.

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 Hard Climate for Penguins and Butterflies

A Hard Climate for Penguins and Butterflies

These three Magellanic penguin chicks died of hypothermia after a rainstorm.

Francisco J. Ayala, Famed Biologist, Resigns After Sexual Harassment Inquiry

Francisco J. Ayala, Famed Biologist, Resigns After Sexual Harassment Inquiry

Francisco J. Ayala, one of the university's more generous donors and a star professor, will leave the university as of Sunday without "emeritus" status.


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