The Atlantic Ocean
On average, the Atlantic Ocean is the saltiest of all of Earth's major oceans.
The Amazon Rainforest
More than 20 percent of the world's oxygen is produced in the Amazon Rainforest. More than half of the world's estimated 10 million species of plants, animals, and insects live in the tropical rainforests.
Sea Levels
Sea levels on Earth would rise about 70 m (230 ft) if all the ice in Antarctica were to melt.
Volcanic Eruptions on Earth
Between 10 and 20 volcanoes are erupting somewhere on Earth every day.
Mid-ocean Ridge System
Earth's longest mountain range is actually underwater. Called the mid-ocean ridge system, it stretches over 80,000 km all around the world.
Global Warming
Global warming has raised the earth's average surface temperature of about 1.5F (0.8C) since the Industrial Revolution.
Stars
There are more stars in the universe than grains of sand on the earth and the number of water molecules in ten drops of water is equal to all the stars in the known universe.
Ocean Floors
100% of the earth's ocean floor has been mapped to a maximum resolution of around 5 km.
