Save the Earth with your science fair project! -- How to make a great science fair project -- Rethinking energy. Alternative oils -- Power plants -- A bright idea -- Running on air -- The sun solution -- Methane madness -- Blowing in the wind -- Putting the sun to work -- Out the window -- Rethinking garbage. Garbage diet -- Recycled paper -- Is bulk better? -- Disappearing waste -- Rethinking pollution. Heating up -- No-zone -- Lights out! -- Clean up your act -- Rethinking water. Down the drain -- Water power -- Not so fast grass -- Solar still -- Deadly fertilizers -- More interesting stuff. Charts, graphs & tables -- Sources -- Greenwashing -- Your ecological footprint.