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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?
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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.
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Designing an Energy-Efficient Building
Use traditional and high-tech methods to minimize energy use.
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Explore Energy Solutions
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In this activity, you will explore how to maximize the performance of a solar cell for the part of the world where you live
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Cooling without air-conditioning or refrigeration
Cool Clay
Learn how a traditional roofing material helps cool homes in the tropics
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The Pot-in-Pot Cooling System
Build a refrigerator that uses no electricity or gas
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Engineering Challenge: Design for Energy Efficiency
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Use the energy of the Sun to cook food…
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Learn How to Generate Electricity from Lemons...
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... based on fruits of vegetables.
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Capture some of that running, jumping and cycling energy and put it to use.
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Design an environment that will protect an ice cube from the temperature of its surroundings.
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How Long Can an Ice Cube Last?