The energy of nature

Energy is everywhere

What is energy? : some preliminary physics

Energy and its ultimate fate

Solar energy and the upper atmosphere

Energy in the lower atmosphere : the weather near the ground

The sun, the wind, and the sea

The energy of ocean waves

The energy of the tides

How surface energy shapes the land

Chemical energy

Energy enters the biosphere

Further travels of energy in the biosphere

The warmth of the earth : nuclear reactions sustain all life

The earth's internal energy

How the earth sheds its warmth

Electromagnetic energy

Wave energy : sound waves and seismic waves

Wave energy : electromagnetic waves

How energy is used.