Four Color Theorem Intro - Sep 1, 2010

Have you ever wondered how many colors are necessary to make a map? Four Color Theorem Intro can help you figure it out!

- To learn more see this page by Ivars Peterson.

Physicists determine air gives liquids their splash - Aug 16, 2010

What happens when a droplet of liquid lands on a solid surface? What determines the way it splashes? How does what happens depends on the kind of gas and the pressure?

- To find out see Physicists determine air gives liquids their splash.
- And to learn how a raindrop splashes before it hits the ground, visit this New Scientist page.

Tsunami - Aug 1, 2010

Remember the 2004 Sumatra tsunami? Take a look at this Wikipedia photo.

- Visit Tsunami to learn the basic science of these waves, how they are produced, and what role NOAA plays in predicting them and minimizing their damage.
- To learn more, see this NOAA video on its method to forecast tsunamis.

soapbubbledk - Jul 16, 2010

Visit the colorful and well-illustrated soapbubbledk to learn about soap bubbles and films.

- You'll find out why bubbles don't grow bigger and bigger, how bubbles can float, and how to attract a soapbubble with a balloon.
- Photos show the interesting soap films you can make on a wire frame, or even inside a bubble.

Sand Dunes: A Phenomenon Of Wind - Jul 1, 2010

Sand dunes are formed by wind in arid regions with a lot of sand on the surface. To learn more, see Sand Dunes: A Phenomenon Of Wind.

- To find out how dunes are classified, see pattern indicators and also sand dunes.