Our World

by Ernest Lucas and Hazel Lucas

Published 25 July 1986
Explores the creation, the characteristics, and the functioning of the universe and the earth, from planets and stars to the appearance and development of life.

Do you know...why our planet needs green plants? ...what makes people different from animals? ...why the balance of nature is important? ...what we can do to protect endangered animals? ...how people survive in different climates? ...what you can do to save