Canada geese have a well-deserved reputation for their bad tempers, but I can tell you from experience that if you feed them, they become much friendlier. You might have noticed that there are more Canada geese everywhere now than when you were a child. The story of the Canada goose shows the danger of messing with Mother Nature. We over hunt, then we try to save a species, then it becomes invasive, and who knows what effects all those things have on other species. Vox brings us the story of these "homegrown honkers."