Biofuels:

Fermentation of yeast with sugary liquids in vacuum results in production of ethanol. It can be used as a petrol substitute as it burns well, gives better acceleration, and is less polluting. Besides, it can be used to supplement petrol and given preference over dangerous additives. In Europe, most biofuels used are made of foodstuffs, namely, sugarcane, wheat and corn that is fermented. This biological exploitation and experimentation has given biofuels as a great replacement. Even municipal wastes can be used for this purpose. Vinod Khosla, a top-notch tycoon is said to be the man behind many cellulosic ethanol companies throughout the globe.