Biosphere 2

It was opened to the public in 1990.

Inside Biosphere 2

The Biosphere has 6,500 windows.

A good look at the shape of the biosphere.

The Biosphere 2 has 7,200,000 cubic feet of sealed glass.

Inside Biosphere 2.

The biosphere is sealed from the earth by a welded stainless steel liner that weighs 500 tons.

The Biosphere 2 is BIG.

It covers 3.14 acres.

They sealed 8 humans in for 2 years.

They did not make it the whole two years without help.

They had to break the seal and pump in more oxygen.

This place is really big.

The roof at the highest point is 91 feet.

If you go, wear good walking shoes.

They set up many different enviroments in the biosphere.

A tree in the biosphere.

The dome building is one of the lungs for Biosphere 2.

Air expands and contracts as it heats and cools.

Without the two lungs, the increase and decrease in air pressure inside the sealed biosphere would blow the windows out.

The housing section and one of the lungs.

A hallway inside the biosphere.

These buildings provided the power.

This tunnel is under the biosphere.

It goes down to where the water is stored. One of the deserts is directly above.

Living coral inside Biosphere 2.

One of the deserts in Biosphere 2.

The kitchen in Biosphere 2.

The small ocean in Biosphere 2.