photobiology

Simple text and photographs describe why people, animals, and plants need light.

A simple introduction to how the sun and its warmth affect the Earth.

Explains how all life on Earth depends, directly or indirectly, on light from the sun, and how all ocean life, from the tiniest plankton to great whales, including the creatures in the darkest depths, form a web that uses sunshine.

Twenty-eight essays discuss man's past and present knowledge of the sun, and its place in the arts, sciences, and humanities.