Enviva, the world's largest maker of wood pellets from forest biomass, filed for bankruptcy in March, sending ripples through a European Union heavily reliant on biomass as a renewable energy source, despite ongoing controversies.    This bankruptcy is also energizing forest advocates in the United States, who are determined to prevent the Biden Administration from using new renewable energy credits to bail out the struggling company. On March 21, officials from five federal agencies visited North and South Carolina to tour an Enviva pellet-making plant and hear environmental justice concerns regarding its impacts on low ...