Stories about the largest gold nugget ever found or a recent gold discovery by an Australian treasure hunter weighing 2.6 kilograms (5.7 pounds) might make it seem like there is a lot of gold on Earth. However, the truth is surprising. All the gold ever found could fit into a cube that measures just 23 meters (75 feet) long on each side. This would be the length of a cricket pitch. While the cube may be on the small side (in contrast to our expectations), it would be extremely heavy, weighing eight times more than the Statue of Liberty. Throughout...