Biosphere 2 started with eight scientists and a very ambitious experiment.

Now, almost 35 years later, it's still being used for cutting-edge research.

Scientists continue to use it to study Earth's problems and find creative solutions.

And the whole thing started in grand fashion.

When Biosphere 2 first launched in Sept. of 1991, it captured the world's imagination.

"And then the moment finally arrived," said KGUN 9 news reporter Mark Horner, who covered the event. "All eight inside Biosphere 2. The hatch sealed for two years."

Four men and four women took part in the experiment.

Biosphere 2 would be the first step in space colonization.

This was the $150 million idea financed by billionaire Ed Bass.

"This was all coming about sort of in the early-to-mid '80s," said John Adams, t

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