From National Geographic:

A crisis is looming: To feed our growing population, we’ll need to double food production. Yet crop yields aren’t increasing fast enough, and climate change and new diseases threaten the limited varieties we’ve come to depend on for food. Luckily we still have the seeds and breeds to ensure our future food supply—but we must take steps to save them.

Six miles outside the town of Decorah, Iowa, an 890-acre stretch of rolling fields and woods called Heritage Farm is letting its crops go to seed. It seems counterintuitive, but then everything about this farm stands in stark contrast to the surrounding acres of neatly rowed corn and soybean fields that typify modern agriculture. Heritage Farm is devoted to collecting rather than growing seeds. It is home to the Seed Savers Exchange, one of the largest nongovernment-owned seed banks in the United States.

For more, see: Food Ark