How can we combat climate warming? Some scientists say geoengineeringinterfering with Earth's systems to counteract climate changeis the answer. Explore ideas such as reforestation, space mirrors, and carbon capture, and learn about the pros and cons of these controversial technologies.

"Our world is getting hotter, and it's our fault. Our addiction to fossil fuels is destroying not only our ancient planet, but our modern civilization. How can we protect our fragile ecosystems while preserving our way of life? How can we respond to climate change deniers who mock the fact that environmental activists use fossil fuels? In short, how can your average concerned citizen live a normal life in a carbon-based economy without being justifiably...