Turning pig fat into bio-diesel

You do perhaps need to check the date for this story, but once you have established that it wasn’t written on April 1st, you can start to take it a little more seriously. An alliance of an American oil company and food producer is to turn pig fat into diesel fuel. The fuel will apparently have the same chemical properties as diesel but a lower carbon dioxide content and zero sulphur, so should be beneficial for the environment the companies argue.

Pig fat to be turned into diesel BBC News Online (19/4/07)

Questions

1. Using diagrams as appropriate, compare and contrast the environmental impact of conventional diesel and the new pig fat bio-diesel.
2. Discuss the extent to which the new pig fat diesel will be better for the environment than conventional diesel.
3. Evaluate two policies that the government could implement to encourage the use of alternative fuels like the new pig fat bio-diesel.