Old coffee grounds to fuel our cars? Researchers have used waste coffee grounds to produce a biodiesel that meets international standards. The researchers are still perfecting the method, but if production costs allow it, the coffee-based fuel will open landfill space and provide a cheaper, cleaner biodiesel. Best part, it smells like your morning java.

Read more: http://www.uc.edu/news/NR.aspx?id=18337