Some giant tortoises have lived for more than 150 years. Still, there are things on this planet much older than giant tortoises. Some of the giant sequoia trees that grow in California could be more than 3,000 years old. Full color.
Robert E. Wells is the author and illustrator of many award-winning science books for children, including Can You Count to a Googol? and Why Do Elephants Need the Sun?. He lives with his wife in Washington.
