Bread would be flat if it weren't for farts. Little critters called yeast are put into bread dough. When the yeast eats the sugar in the dough, it gives them carbon dioxide gas. They fart the gas which causes the bread dough to rise. Think about that the next time you bite into a peanut butter sandwich.
Veggie fuel
Veggie fuel British students have invented a tractor that runs
on cooking oil. The tractor is journeying the entire length of
Great Britain as part of an environmentally-friendly design
project. The trip was organized by students at Newton Rigg College
and their journey will take them from John O’Groats on the
northern tip of Scotland, to Land’s End, Cornwall, on the
south-western tip of England. The tractor is stopping at schools to
fill up on fuel called ‘biodiesel’ which is converted
from vegetable oil. 15 JUNE 2000
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