could one day be as expensive as caviar. officials are warning the human population rate cannot keep up with the livestock rate. in 50 year the a hamburger will be so rare, no pun intended, only the rich will be able to afford it. your pasta sauce could get a powerful punch to fight wrinkles. italian farmers are growing a new kind of super tomato that has an antioxidant, lopopine. two french sisters have their own secrets to longevity. they're the world's oldest twins. how did they stay healthy? they swear by daily exercise and a spot of whiskey. here are giant watermelons in minnesota. farmers showing off 200-plus pound melons. back in 2006 he grew a 225-pound watermelon. a giant hobby on a very small scale. a former canadian lumberjack is building a working suspension bridge out of toothpicks.