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When The Rain Dance Fails...

During the sizzling summer heat wave, the desperate state of Oklahoma has been trying to help Mother Nature along.

They are using cloud seeding in an effort to produce water for thirsty crops and cattle. CBS 'This Morning' Meteorologist Craig Allen reports.

Some days, up to six planes have been flying throughout the state, and the planes go up as high as 20,000 feet.

Once they get there, flares are filled with silver iodide and fired into rain-bearing clouds; the rain clouds must already exist.

Water vapor from the clouds condenses to form tiny droplets and merges into larger rain drops that eventually fall to Earth.

The process takes about 20 to 30 minutes to produce rainfall.

Despite the millions of dollars spent on research into cloud seeding, there is little evidence it produces more rain than nature would on its own.

Also, since the clouds can drift, it is hard to tell if the rain will fall where it is needed.

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