El descubrimiento de América

What causes sound? How does sound travel? Sound begins when matter vibrates. Without this vibration sound could not move and nothing would make any noise. Starting with tiny molecules, this book explains the main concepts of sound and furthers understanding through a series of easy-to-do experiments that will appeal to readers of all ages.

Essays by well-known climbers accompany a range of superb color landscape photographs that echo the great traditions of the Ansel Adams and the Sierra Club large format books of the 1970s.

Explores snakes and describes how they move, hunt, eat and mate. Includes fact boxes with information about snake life.

Een schrijver van beschouwende teksten raakt in een intrige verwikkeld met zijn redactionele assistente.