Curious about your climate footprint? There's an app for that

This idea of a carbon footprint comes up a lot in news coverage about personal climate impact.

The concept is simple: It includes anything that you add to planet-warming emissions, ranging from the gas consumed by your car to the energy required to produce the food you eat. Reducing your carbon footprint means contributing less of these gases to the atmosphere.

But figuring out how to lower your carbon footprint is more complicated. That’s why several mobile tracking apps help people figure out which actions create the most emissions and how to avoid them.

Researchers have found that people often misjudge how their actions contribute to climate change, but can do better with more information. Apps are one way to learn more about emissions and build better habits.

So, I downloaded thr