This year, the price
of oil has soared, in recent weeks reaching a new high of $135 a barrel. This
has sparked protests in many countries, including Britain, where truck drivers
recently blocked roads in several cities to protest the price of fuel.
For some, the high cost of fuel has prompted
more creativity. A growing number of
motorists are making their own bio-diesel with recycled cooking oil. It's only cheaper, but greener too.
Catherine Drew visited a course near
Oxford, England to see how it is done.