The man now known as “First Guide & Explorer of Mammoth Cave," had been enslaved in the 19th century and sent to explore what was becoming a hot tourist site. He set the bar for every guide who came after him.
Two design students have come up with an idea to turn the stretchy, plasticky parts of chewing gum into new wheels for skateboards, so the gum isn't wasted. It's the kind of idea that just might stick.
