Explainers

Wildfires are becoming more frequent and severe as a result of climate change, as forests in arid parts of the world become hotter and drier.

Hydrogen is the most abundant chemical substance in the universe. It can be used as a fuel that does not produce greenhouse gases when burned.

Freight transportation moves billions of tons of cargo around the world each year. Nearly all freight transportation runs on oil and gas.

Biofuel is any liquid fuel made from “biomass”—plants and other biological matter like animal waste and leftover cooking fat.