Scientists are using advanced technology to lessen the danger from sinkholes like the one in Florida that swallowed part of a house. Ground-penetrating radar can scan sites for cavities 50 feet or more below the surface. (March 6)
Me: HAHAHA So glad you actually stopped taking selfies long enough to realize you were invaded with the people you wanted, illegal, system suckers that you will have to pay for now. Too bad so sad for your bleeding heart that you better not complain when you can't afford it anymore. If you do, you are RACIST.