TeachEngineering
Teach Engineering: Acid Attack
In this activity, students explore the effect of chemical erosion on statues and monuments. They use chalk to see what happens when limestone is placed in liquids with different pH values. They also learn several things that engineers...
National Wildlife Federation
National Wildlife Federation: Global Warming and Hurricanes
Will global warming make stronger hurricanes? This informative resoruce delves into this question and provides an insight into what the prevailing school of thought is on this subject.