World's oldest rice paddies are discovered in China dating back 6,300 years
The world's oldest and largest rice paddies have been found in China The field was farmed some 6,000 years ago and is said to cover 222 acres Experts found the paddies had changed three times over since first being built The first was designed with mounds of soil on the edges of the paddies The second add roads and the newest is laid out like a checkerboard The latest change also has roads along the fields and irrigation systems