Katherine Butler

MY MOST RECENT CONTENT

12 worst U.S. cities for allergy sufferers

Fri, Apr 19 2013 at 12:00 PM

Americans are experiencing one of the worst allergy seasons in years. Here are the 12 worst cities out of 100 ranked by the United States for allergy sufferers.

5 weird things that happen after you die

Mon, Feb 25 2013 at 3:55 PM

The grave, gross facts about how your body decomposes.

8 incredible images of Saturn

Mon, Feb 04 2013 at 3:54 PM

A NASA satellite reveals stunning pictures of the planet and its rings.

When waste attacks: 5 big sewage disasters

Wed, Jan 09 2013 at 4:36 PM

Here are some of the most serious city sewage disasters in history — and tips on how we can prevent future messes.

Snow art showcases beauty of winter

Thu, Jan 03 2013 at 1:26 PM

Wearing snowshoes, artist Simon Beck carves intricate geometric designs into snowy landscapes.

7 asteroid impacts on Earth

Sun, Nov 25 2012 at 12:07 PM

Life on Earth has been heavily shaped by impact events. Not only have they shaped evolution, they have created important ore deposits and land disturbances. Here are seven images of known asteroid impact craters on our planet.

9 threatened animals of the Southeast

Sun, Nov 11 2012 at 6:06 PM

There are as many as 322 federally listed endangered species in the Southeast. Here are nine animals currently under threat in the region.

8 images of impact craters in space

Tue, Nov 06 2012 at 7:05 PM

Here are eight images of amazing impact craters in our solar system, each telling its own tale of mysterious destruction.

10 incredible images of solar flares

Tue, Oct 23 2012 at 1:48 PM

Solar flares and other activity from our star are perhaps among the most beautiful and feared events in the solar system. Here are 10 images of solar activity.

The worst everyday air pollutants -- and what they do to our bodies

Thu, Oct 18 2012 at 11:12 AM

Here's how some of the most common air pollutants are created and the effect they have on our bodies.

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