More than 1000 tornadoes touch down in the US every year. When most people are running away, one team of scientists heads straight for the action.Added: May 20, 2008 Duration: 04:19 Rating: 3.0 / 5.0 Expires in 3 months on August 19, 2008
A tornado chaser shows a newbie how to follow tornadoes, but gets too close.Added: May 17, 2008 Duration: 01:28 Rating: 3.0 / 5.0 Expires in 3 months on August 20, 2008
The longest suspension bridge in the world is earthquake-ready - and earthquake-tested.Added: April 24, 2008 Duration: 03:31 Rating: 3.0 / 5.0 Expires in about 1 month on June 22, 2008
Paper or Plastic? Edward Norton describes a simple easy step everyone can take to help clean up the environment.Added: April 22, 2008 Duration: 01:08 Rating: 5.0 / 5.0 Expires in 2 months on July 21, 2008
Each year, hundreds of thousands of volunteers gather to clean up coastlines around the world.Added: April 11, 2008 Duration: 02:53 Rating: 3.0 / 5.0 Expires in 2 months on July 18, 2008
The second largest coral reef in the world is under threat, off the coast of Belize.Added: April 11, 2008 Duration: 03:40 Rating: 3.0 / 5.0 Expires in 2 months on July 15, 2008
This frozen wonder of the world is the biggest igloo on the planet, and also a hotel!Added: April 11, 2008 Duration: 02:55 Rating: 3.5 / 5.0 Expires in about 1 month on June 15, 2008
Looking for an island paradise? Then book a flight soon. They could be vanishing under the rising tides of global warming.Added: April 11, 2008 Duration: 03:42 Rating: 2.5 / 5.0 Expires in 2 months on July 17, 2008
Global warming could do more than just melt polar ice. It could change our maps, and displace people from cities and tropical islands.Added: March 22, 2008 Duration: 03:03 Rating: 3.0 / 5.0
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