I built a simple app that runs a cron job every week and texts you the latest climate change bills that are being worked on in the US Congress. The message contains links you can click to learn more and keep tabs on your representatives.
A lot of submissions are about tracking the data of climate change. I believe this is helpful, but one of the biggest ways to help fix climate change is to push your representatives to pass legislation that will regulate the causes of climate change.
The code is minimal and is open source on Github. See the code here: https://github.com/KoalaTeaCode/HackThePlanetBillsNotifications