Sparking a fire in the wilderness allowed humanity to explore the Earth. But what began as a literal survival strategy eventually turned into a hobby: camping. The time-honored pastime continues to gain popularity, but it sure doesn't look like it did in the early 1900s. Good thing too — unless lugging around a bulky, clanky, smoke-billowing, literally radioactive lantern sounds appealing. We'll stick with the pocket-sized, Duracell-powered LED ones, thanks.