Live Long and Prosper: Nature Life Spans

From minutes to centuries, the varied life spans of Earth’s plants and animals are inextricably entwined. Learn more about plant and animal life spans and how they're affected by each other.

Ruby-throated Hummingbird
The ruby-throated hummingbird’s heart beats more than 1,200 times a minute when the bird is in flight; 250 times a minute when at rest.
Photo by Richard Day/Daybreak Imagery