Dylan Moskowitz wrote: As we all know, biofuels are made from unused cooking oil(also known as grease).
No, actually that is only ONE form of "biofuel". "Biofuel" is any fuel made from biological materials (plants, etc.) Ethanol is VERY common biofuel and it's not made from oil, but rather from sugars, starches, cellulose, etc.
Ethanol is usually the biofuel they complain about because numerous studies have shown that making ethanol from corn uses MORE petroleum to grow and process the corn than the amount of petroleum offset by the resulting ethanol.
Ethanol is a huge boondoggle the way it's currently produced in the USA. We would be better off (less pollution and less petroleum consumed) if we stopped producing/using ethanol.
FWIW there are ways to produce ethanol that are far better than the ways it is currently produced, however they are more expensive so not widely used.
The second, more important, problem with biofuels is that any land used to grow biofuel can't grow food. In the USA we use a LOT of petroleum and we can't grow enough
plants, etc. to produce enough biofuels to completely offset our petroleum consumption. I did the calculations a few years back and came to the conclusion that if we used ALL of the arable land in the USA to grow biofuels (and therefor couldn't grow ANY food) we could offset less than 1/4 of the petroleum we use.
However, the news isn't all bad. There is a lot of land in the USA that isn't suitable for growing food that might be suitable for growing biofuel.