Tip 001 — Use a glass when brushing your teeth

Originally posted on r-zero.xyz/blog/tip-001. R-zero is a guide for people who wish to live more sustainably. Every month, I share 5 tips to reduce waste and save resources, detailing the impact each tip has in terms of sustainability, as well as the money and time you’d be saving or spending.

This is the very first of many sustainability tips and challenges that I’m planning to…