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Switch to Public Transport
If you're looking to curb climate change on a more personal level, the best thing you can probably do is stop taking your own car to work every day. If your city has a decent infrastructure of public transports, you should definitely make use of it. It's one less car emitting carbon into the atmosphere. One car might not make a world of difference, but if the few dozen people are reading this answer and make use of the suggestion, a difference could definitely be made.
