Week of July 26, 2009

Cool Spots
Back Issues
Visit the Featured Web sites to find the answers.

On which continent is the city of Mohenjo-Daro located?
South America

In what year was “Swiss Cabinet” created?

Where did the technology for handheld vacuums come from?
Handheld mixer
Cordless drill

Valley Visitors

compassWelcome to BBC's Indus Valley, www.bbc.co.uk/
, where your mission is to explore the Lost City of Mohenjo-Daro with the professor and see what you can discover. Wisely use your tools – a laptop, compass, brush and camera – along the way. Professor Indus is there to assist you on your quest to learn what you can about this mysterious place. Once you drag and drop your way through the mapping section, you are well on your way. Good luck, explorer!
Nominate a cool Web site at:

Looking at Landscapes

painting suppliesLandscapes, www.museum
, are often popular inspirations for many works of art. Mouse around in Themes to get the lowdown on everything from composition and perspective to styles and materials. Next, move over to History of the Landscape to investigate how this genre has evolved over time from lowly depictions to prized pictures. If you want to check out some famous works with your own eyes, take a trip to the gallery for a good look at the beauty captured in these images.

Give Me Some Space!

houseNASA @ Home and City, www.nasa.gov/externalflash/
, will show you that space is all around you, everywhere you look. Each room in the house offers up a ton of info on commonly used products and what they have to do with space exploration. If you click on the house, this interactive site will help you navigate your way around, upstairs and down, to places like the bathroom and the kitchen. Finally, take a drive into the city and examine how space technologies have affected everything from air travel to the news.
Speak Out

What is your favorite hot weather activity?

Speak Out Here!

Dear Amy: Why are pollution and global warming happening? — Tesla, Staples, Minn.

Dear Tesla: With so many different terms such as “greenhouse gases” and “global warming,” it can be confusing to understand what they all mean, how they're connected and what it means for the planet's inhabitants. Pollution is basically releasing harmful substances into the environment, whether they’re gases, chemicals leaking into streams or littering. Many of the gases released into the atmosphere by human activities are greenhouse gases. This means they are able to trap heat in the atmosphere the same way a greenhouse traps heat.

We need these gases in order for Earth to hold heat at night, but the problem is that the levels of these gases are increasing rapidly. This leads to an overall heating trend, or global warming, and the Earth's average temperature increases. The Earth has gone through heating and cooling trends throughout its history, but scientists believe that most of recent our temperature change has been caused by air pollution. To learn more about the causes of global warming, visit http://timeforchange.org/cause-and-
and www.ecobridge.org/causes_of_global_


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