About Earth

As far as we know, Earth is the only liveable planet. The atmosphere provides a shield to the void of space and which locks in nitrogen and oxygen for us to breathe.

70% of Earths surface is ocean, which is also inhabited by diverse life forms. Earth is made up of different layers. It has an inner core, an outer core, a mantle and a crust. 

Earth also has four types of spheres. They are the hydrosphere, biosphere, lithosphere and atmosphere. 

See Nat Geo Best Photos of 2016 loading...
See Nat Geo Best Photos of 2016
Here is a gallery of National Geographic's 52 best images of the year—curated from 91 photographers, 107 stories, and 2,290,225 photographs.
Haunting Pictures Show Earth Rising Over the Moon loading...
Haunting Pictures Show Earth Rising Over the Moon
Japan just released high-resolution pictures from its Kaguya orbiter, including some that have never been seen before by the public.
These Invisible Organisms Hold the Key to Life on Earth loading...
These Invisible Organisms Hold the Key to Life on Earth
Microbes are the dominant force on the planet, says author Ed Yong.
Scientists Have Found The Next Earth loading...
Scientists Have Found The Next Earth
The potentially habitable planet was found orbiting the star closest to the Sun.
Olympic Games We No Longer Play loading...
Olympic Games We No Longer Play
Then as now, Olympic contenders often spent years training with expert coaches, and victors were showered with praise and wealth.
Astronauts Embark on a Training Mission Deep Beneath the Earth loading...
Astronauts Embark on a Training Mission Deep Beneath the Earth
A sprawling network of caves in Italy allows would-be space travelers to learn teamwork as they explore a strange new world.

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