A short history of the Earth

What is energy?

The sun

Fossil fuels : coal and oil (part I)

Oil (part II) and natural gas

Water and wind power

The nature and history of nuclear power

Steam and the industrial revolution

Electricity

The internal combustion engine

How we use energy today

The climate challenge

Options for a low-carbon energy economy : corn, sugar cane, and other biofuels

Visions for a sustainable energy future.