But there’s a catch. Most of this renewable energy does not come from solar and wind. In total, solar and wind make up 2.7 percent of all energy, whereas biomass makes up more than 10 percent. Biomass, which basically is a fancy-sounding name for wood, is one of the old, reliable renewables that can produce energy when it is needed. The problem for the planet is that wood is often imported from US forests in diesel-driven ships, and emits more carbon dioxide than even coal when it is burned.
