Is the World Getting Warmer?
Is the world getting warmer? The global temperature changes over the past 150 years, would indicate that the answer is a "YES!" But what if we look at the past 1,000 years, 100,000 years or more? And why should YOU care if indeed our world is getting warmer? read more |
Build a Solar Water Heater
Many designs for solar water heaters circulate water through a series of coiled or looped tubes in a collector box with a transparent cover facing the Sun. In this activity, you will find out if such a design really works. read more |
Designing an Energy-Efficient Building
Use traditional and high-tech methods to minimize energy use. read more |
How Long Can an Ice Cube Last?
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