Re:char is a small company using technology to tackle some serious real word problems. Their main goal is to help farmers grow more food. It may sound simple, but they're using a high-tech process to get the job done.
Biochar is charcoal that's made through an intense heating process called pyrolysis. According to re:char, biochar holds in nutrients and water better than plain soil. So, crops grow better and farmers have a higher output.
A kiln is used to convert waste and plant materials into biochar. This fertilizer is mixed in with soil to create an even better opportunity for crop growth. Plus it's carbon negative, so it's simultaneously helping to feed more people and cleaning the environment.