India cracks down on illegal sand mining

Sand is in high demand, because it's needed to manufacture cement; that's led to a problem, in many countries, with illegal sand mining. That is, digging up sand illegally from beaches and river banks, and harming ecosystems in the process. As of April, India's Supreme Court is cracking down on the practice, with an ultimatum to three states: Stop illegal sand mining in your borders, or the military will stop it by force. The World's Host Carolyn Beeler checks in with Siddharth Agarwal, founder of India Sand Watch, for the details.