In the "never think any science is useless file" we found the discovery that poo from China's giant panda may end up being the key that unlocks efficient biodiesel production. It seems there's an enzyme in there that allows the panda to convert 95 percent of the plant matter it ingests into energy. It's hoped that, once the enzyme is synthesized, it will allow the creation of a cheaper process for converting plant matter into biodiesel.