For the past 250 years, humans have steadily been raising the concentration of atmospheric carbon dioxide and other non-condensing greenhouse gases. Due to several of earth's positive feedback loops, there may come a time when these actions can no longer be undone, and irreversible changes to our climate take place. When might earth's climate reach the tipping point?

Question: How do you think a home thermostat system might be similar to the way the earth controls its climate system? Why are feedback loops so important in the climate system?