"The hound is running for his dinner, the rabbit is running for his life." - Aesop

Supplementary videos

Trophic cascade in Yellowstone: wolves and deer and forests and rivers
Cordyceps: a killer fungus: is it a decomposer? Parasite?
Lancet fluke: mind control parasite
A golden detritivore
Operation Dung Beetle: David Attenborough

Extra credit readings

• NZ flatulence tax outrages farmers BBC News 6/20/03
• Cow Power Could Generate Electricity For Millions ScienceDaily 7/25/08

Additional material

• How much food have you eaten?
• Water cycle

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