An alerting CO₂ monitor for the home office, based on https://github.com/larsp/co2monitor
Spot the #bike hazard.
No matter which social network you're on, following a diverse group of people helps you taking a peek at the other side of your personal filter bubble.
You don't have to agree with everything and everyone, but please, at least try to listen to people and their opinions.
It will help you appreciate your own life, and may just make you a little wiser.