Look around you. How many things that you see have some kind of paint, varnish or finish? Coatings are everywhere -- and getting greener by the day.
Though not everyone agrees why the Earth is getting warmer, temperatures are inching up worldwide. A couple of degrees doesn't seem like such a big deal. What difference can a subtle change make? See more »
Some scientists think that the ocean is a potentially enormous storage ground for carbon dioxide. Could thousands of aquatic tubes help sequester carbon, or is it all just a pipe dream? See more »
Our big cars and big appetites are taking a big toll on the environment. Overconsumption contributes to the depletion of Earth's resources, and some countries are taking more than their share. See more »
We humans like to trade one problem for another. We give up drinking only to take up smoking. Will we also exchange a reliance on dwindling fossil fuels for a food shortage caused by ethanol production? See more »