Survival Guide Main Aunt Mim's Questions It's 15 below out there! The science is in doubt. But it's not our fault. A little heat sounds nice! It's not happening here. But we can't do anything. What about me?   Printer-friendly cheat-sheet   Yep, sometimes we're funny! Subscribe to the Sierra Club Insider for more stuff like this.

Aunt Mim said: But do you really think we're causing it? So you say: What we know is that everyday human activities such as the burning of fossil fuels and rampant deforestation are increasing concentrations of greenhouse gases in the atmosphere. One of the worst culprits is the carbon dioxide spewing from our cars and power plants. CO2 is building up in the atmosphere, forming a "blanket" around the earth and causing the planet to warm. Up to Top HOME | Email Signup | About Us | Contact Us | Terms of Use | © 2008 Sierra Club