Bill Clinton visited both the Grand Canyon (in 2000) and Yellowstone (in 1995). President Clinton stayed in the Mary Colter Suite of the Grand Canyon's El Tovar and had lunch at Yellowstone's Old Faithful Inn. President Clinton and the First Lady also took a stroll around Old Faithful Geyser.
Exploding Water in the Microwave. It's practically an urban legend: a man heats water in the microwave for a cup of instant coffee. While taking the cup out of the microwave, he notices the water doesn't have any bubbles...at which point, the water boils up and explodes, giving him burns on his face and hands.
This can end up heating the water faster than it can turn into vapor, causing it to become superheated. Bubbles of water vapor can then quickly form when the water is jostled as the cup is taken out of the microwave. This makes it boil up, seeming to explode, as all the vapor is suddenly released. But in reality, the conditions that make this happen are relatively rare.