LONDON, United Kingdom (Reuters) — Waste coffee grounds will be used to help fuel some of London’s buses, Royal Dutch Shell and green energy company bio-bean said on Monday (November 20). A new biofuel, which contains part coffee oil, is being added to the London bus fuel supply chain where it can be used without the need for modification, according to bio-bean founder Arthur Kay. “Bio-bean has created a B20 fuel which is 20 percent […]