The largest glass bridge in the world has just been erected in China. I know, walking on glass 300 meters above the ground may not seem like something you would want to do, which is why volunteers came out to test the glass. They took huge sledge hammers to the glass and tried to break it, luckily they were unsuccessful. They even drove a 15 ton vehicle over the glass to ensure the public that this glass is very strong. Even though the volunteers had safety harnesses on, shout out to all the brave people who participated in this strength test.