Everyone has heard of the giant characters from tales or legends

Everyone has heard of the giant characters from tales or legends. Giants have generally presented as creatures so big that the earth trembled when they walked. It seems however that the giants are not just fairy tales, considering the fact that their remains have been found all over the world.

For example the biblical Goliath was said to be only one of four brothers. There are countless tales of giants from all over the world: from Norse, Indian, Mayan, Aztec, Incan, and Greek lore.

What if giants are not myths at all, but a part of our actual history, that has been hidden from us, up till now?