Could the Death Star Destroy a Planet?

Students in England concluded that the Star Wars space station could easily have destroyed an Earth-like planet

A sample of highly enriched uranium

What Is Enriched Uranium?

Naturally occurring uranium doesn't have enough of the fissile isotope U-235 to set off a nuclear reaction, but scientists found ways to increase the stuff

Mauna Loa (as seen from nearby Mauna Kea) is tall enough to have snow, at least when the volcano isn't erupting

The Tallest Mountains in the Solar System

Mount Everest is a just a peewee when compared with such giants as Olympus Mons on Mars

A good eye will spot the black-marble jawfish next to the mimic octopus's arm

Fish Mimics Fish-Mimicking Octopus

The black-marble jawfish takes advantage of its coloring to blend in with an octopus and stay safe from predators

If spicy fruits are helpful to a chili plant, why aren't all chili peppers hot?

Why Not All Chili Peppers Are Hot

Being spicy helps a chili plant protect its fruit from fungal rot, but it has a downside in dry conditions

An elephant running in the Masai Mara, Kenya

14 Fun Facts About Elephants

#5: Cartoons lie—elephants don't like peanuts

The Jurassic Coast encompasses 185 million years of history.

Evolution World Tour: Jurassic Coast, England

The best opportunity to play paleontologist is on the southern coast of England, a site rich with marine reptile fossils

Fireworks can startle birds so badly they become disoriented

Birds Have No Reason to Like Fireworks

New Year's Eve fireworks can badly startle and disorient birds

A white rhino in Kruger National Park, South Africa

Ten Great Science Stories You Might Have Missed

From zebras in the Kalahari to satellites pointed at the Sun, the magazine has covered a host of interesting science topics this year

Cats and earthquakes were popular subjects this year.

Top Ten Science Blog Posts of 2011

Cats, zombies, earthquakes, chickens--our readers have an eclectic taste

A young echidna in Coles Bay, Australia

What In The World Is An Echidna?

This spiky monotreme can be found in Australia and New Guinea

A composite image of S106, from the Hubble Space Telescope and Japan's Subaru Telescope

A Holiday Angel Among the Stars

The star-forming region Sharpless 2-106 bears a certain resemblance, particularly during this time of year

If you don't want to show an misformed Moon on a Christmas card, a full moon is a safe option

That Moon On Your Christmas Card

An astronomer finds that depictions of the Moon on Christmas cards, wrapping paper and books is often wrong

Reindeer have a few strategies for keeping cool (courtesy of flickr user much ado about nothing

How Rudolph Keeps A Cool Head

Reindeer have several strategies for releasing heat when they get too hot

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Evolution, A Book That Turns Science Into Art

See examples of these beautiful photographs of animal skeletons in our image gallery

Aspen trees in Colorado

What Was Killing the Aspens?

Scientists determine it was lack of water, not food, that was responsible for sudden aspen decline

In this image from December 15, 2011, Comet Lovejoy appeared to be headed towards sure destruction in a collision with the Sun

A Comet’s Close Call

Scientists predicted that Comet Lovejoy would collide with the Sun

Nephila clavipes, a tropical spider, is big enough that it can keep all its brains in its body rather than in its legs

Some Spiders Have Brains in Their Legs

Just one more reason it's not nice to pull the appendages off of creepy crawlies

The Wren Library, Trinity College, Cambridge University

Read Sir Isaac Newton’s Works Online

Cambridge University is digitizing its collection of works by Newton and other revolutionary scientists of the past

A page from my own calendar, with a photo of giraffes taken at Tarongo Zoo in Sydney, Australia

Should You Buy a Wildlife Calendar?

Not all photographers are ethical about where they shoot their photos

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