For most people, it's fair to expect a walk in the woods to be a largely peaceful experience. When they plan a hiking route, they expect the dirt paths and the underbrush, scattered pine needles, ...

Pictured here are tar balls – sticky clumps of oil, sand and shells – washed up on Gulf Shores, Alabama, in 2010, following the Deepwater Horizon disaster. Here are some of the weirdest things to have ...