In the article, “Progress and recent trends in biofuels”, Demirbas (2007) explores the issues surrounding biofuels and why this topic is gaining popularity in both developing and developed countries. The issue of biofuels has been raising heated debates in the wake of the challenge of global warming, the ever-increasing energy consumption, and the rapid reduction of fossil fuels across the world. In addition, biofuels are environment-friendly and renewable sources of energy. Therefore, given the aforementioned challenges, the focus is now shifting to the generation of biofuels from readily available biomass sources, which explains the increased interest in the developed world to employ technology in making biofuels to supplement or substitute conventional fossil fuels.

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