Water: no cholesterol, fat free, zero sugar
Infrastructure: pipes, wires, roads, bridges, railroads, dams, airports, and levees
Floods: when the levees break
Garbage: trash talk
Soil, crops, and food: dirt and nutrition
Fossil fuels: energy from the past
Alternative energy sources: energy for the future
The nuclear energy controversy: radiation for everyone
Climate change: what have we done?
Air pollution: lung disease
Conclusion: is there hope?