"Biology is applied chemistry." - Anon.

Supplementary videos

Hydrogen is very reactive: Hindenburg explosion
Hydrogen is very reactive: balloon explosion (HHMI)
Swamp cooler using evaporative cooling
Water pulled up a tree due to cohesion
Birds dance on water due to surface tension

Extra credit readings

• How an Evaporative Cooler Works California Energy Commission 2006
• How lizards walk on water BBC News 11/24/04
• Acid/Alkaline Theory of Disease Is Nonsense Quackwatch 1/11/09

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