Nature Facts
Plants, weather and the living world.
Mammoth Cave Is the Longest Known Cave System in the World
Mammoth Cave in Kentucky is the world's longest known cave system.
The Hottest Air Temperature Ever Recorded Was in Death Valley
The world record highest air temperature, 134°F (57°C), was recorded at Furnace Creek in Death Valley on July 10, 1913.
A Coast Redwood Can Grow to 367 Feet From a Seed the Size of a Tomato Seed
California's coast redwood may grow to a height of 367 feet (112 meters) from a seed no bigger than a tomato seed, and can reach an age of 2,000 years.
The General Sherman Tree Is the Largest Tree in the World by Volume
The General Sherman Tree in Sequoia National Park is the largest tree in the world by volume, estimated at 52,500 cubic feet (1,486.6 cubic meters).