Tomorrow's energy: hydrogen, fuel cells, and the prospects for a cleaner planet

Why hydrogen? The grand picture

Hydrogen's discovery: phlogiston and inflammable air

A history of hydrogen energy: the Reverend Cecil, Jules Verne, and the Redoubtable Mr. Erren

Producing hydrogen from water, natural gas, and green plants

Primary energy: using solar and other power to make hydrogen

Terra transport: hydrogen for cars, buses, bikes, and boats

Fuel cells: Mr. Grove's lovely technology

Clean contrails: the Orient Express, Phantom Eye, and LAPCAT

Hydrogen as utility gas: hydricity, and the invisible flame

Nonenergy uses of hydrogen: metallic H₂, biodegradable plastics, and H₂ tofu

Safety: the Hindenburg syndrome, or "Don't paint your dirigible with rocket fuel"

The next fifty years.