If you were a climate scientist, thinking about climate change every day, how would it affect your behavior? It’s transformed the behavior of atmospheric scientist Peter Kalmus. His carbon footprint is one-tenth of the average American.

While it may seem like he’s giving up a lot, Kalmus says he leads a much happier, more fulfilling life, after moving to what he calls a “low energy lifestyle.” Kalmus bikes a lot, composts aggressively, and grows his own food. He recently challenged other climate scientists to give up carbon intensive airplane rides, as an example to others.

We’ll ask Kalmus to offer ideas on how to transition away from a fossil fuel lifestyle from his book Being the Change: Live Well and Spark a Climate Revolution.