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"Sowing seeds that will take the heat "
Adobe Flash Player Clip
Time: 04:47 minutes audio
Date: August 25, 2009
Publisher: APM

As the planet warms, fewer crops will survive the summer heat. Yet the world's population will keep growing. Some scientists are responding by keeping seeds on ice for future generations, but one Arizona seed farm is cultivating them in the desert sun. Sam Eaton reports.