Kids all over the world help collect seeds, weed gardens, milk goats and herd ducks.

From a balcony garden with pots of lettuce to a farm with hundreds of cows, kids can pitch in to bring the best and freshest products to their families' tables—and to market. Loaded with accessible information about the many facets of farming, Down to Earth takes a close look at everything from what an egg carton tells you to why genetic diversity matters—even to kids.