Biosphere 2

Biosphere 2 is a really cool experiment. Scientists built a very big building that contains a lot of different types of environment, like a tiny version of Earth. Inside the building, scientists have different eco-systems like rain forests, deserts, and even an ocean! The scientists are studying how each eco-system works together and how all the different plants, animals, and microbes live together. They are also studying how humans interact with our environment, so eventually we can learn to take better care of our own planet, Earth.