To save the monarch butterfly, scientists are moving a forest up a mountain

As a boy, Francisco Ramirez Cruz loved hiking with his grandfather up into the mountains of central Mexico. While the old man grazed sheep or hunted for wild mushrooms, Ramirez would play amid the throngs of monarch butterflies that migrated 3,000 miles to this forest each autumn, turning the blue sky into a sea of orange. In the middle of Ramirez’s orchard of apple and plum trees, the scientists helped him construct a small greenhouse, where he tends to several dozen saplings that were taken from the forest and will eventually be replanted.

Source: www.latimes.com