When huge petroleum deposits were discovered, gasoline and diesel were kept cheap for decades. Due to this, the biofuels were largely forgotten.
Recently, the rise in oil prices, along with growing concern about global warming caused by carbon dioxide emissions caused biofuels to regain popularity.
As John David Kaweske, the President and founder of Bio Clean Energy, S.A., explains, gasoline and diesel are actually ancient biofuels. They are commonly known as fossil fuels. This is because they are made from decomposed plants and animals that have been buried in the ground for millions of years.