Today’s Solutions: July 26, 2026

Close-up of wet, dark brown soil with small clumps and granular texture.

Wet coffee waste becomes coal-grade fuel in under two minutes

BY THE OPTIMIST DAILY EDITORIAL TEAM Researchers at the Korea Institute of Geoscience and Mineral Resources developed a plasma-based process that converts wet coffee grounds into coal-grade biochar in under 90 seconds, with no pre-drying required. The system, described in Chemical Engineering Read More...