Science

3:23am

Wed January 22, 2014
Science

Ancient And Vulnerable: 25 Percent Of Sharks And Rays Risk Extinction

Originally published on Wed January 22, 2014 7:23 am

Each year, 6 to 8 percent of the global population of sharks and rays gets caught, scientists say. The fish can't reproduce fast enough to keep pace
Mike Johnston Flickr

There are more than a thousand species of sharks and rays in the world, and nearly a quarter of them are threatened with extinction, according to a new study. That means these ancient types of fish are among the most endangered animals in the world.

This word comes from a Swiss-based group called the International Union for the Conservation of Nature (IUCN), which maintains the so-called Red List of species threatened with extinction.

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3:01am

Fri January 10, 2014
Science

When Big Carnivores Go Down, Even Vegetarians Take The Hit

Originally published on Fri January 10, 2014 10:45 am

Ask not for whom the wolf stalks ...
Holly Kuchera iStockphoto

Big, fierce animals — lions and tigers and bears, for example — are relatively scarce in nature. That's normal, because if you have too many, they'll eat themselves out of prey.

But top predators are now so rare that many are in danger of disappearing. That's creating ripple effects throughout the natural world that scientists are still trying to figure out.

What they're exploring is ecology — the interplay of animals and plants in nature. It's not rocket science. It's harder.

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3:37pm

Thu January 9, 2014
Space

Space Weather Will Create Rare Northern Lights In Colorado

An aurora as seen over the Poker Flat Research Range north of Fairbanks, Alaska.
NOAA

Skies across Colorado will offer a rare opportunity for seeing the Northern Lights — typically seen in places like Canada and Alaska. The impetus for this natural phenomenon comes from a powerful geomagnetic storm caused by an eruption from the sun.

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5:44am

Tue December 31, 2013
Space

Bon Voyage, Voyager: Old Friends Take Stock

Originally published on Tue December 31, 2013 7:37 am

NASA/JPL-Caltech

For the scientists who have emotionally traveled with NASA's Voyager mission for decades, 2013 will be remembered as the year they knew Voyager 1 had finally become the first explorer from Earth to enter the mysterious realm of interstellar space.

Voyager 1 and its twin, Voyager 2, both blasted off in 1977, more than 35 years ago. Voyager 1 flew by Jupiter, then Saturn — and then on toward the unknown region that lies between stars.

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5:30am

Tue December 24, 2013
Space

On Anniversary Of Apollo 8, How The 'Earthrise' Photo Was Made

Originally published on Wed December 25, 2013 5:24 am

The iconic "Earthrise" photo taken by astronaut Bill Anders through a window on the Apollo 8 command module on Dec. 24, 1968.
Bill Anders NASA

The first humans to catch a glimpse of the Earth rising over the moon nearly missed seeing it at all, let alone capturing the snapshot that became one of the most iconic photos of the 20th century.

NASA has released an animation commemorating the 45th anniversary of Apollo 8, the first manned mission to orbit the moon. The famous "Earthrise" photo was taken on Christmas Eve 1968.

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