Are we alone? How technology is used to find alien life

The nation's top scientists believe there is intelligent life outside our solar system. They point to the numbers and pure science. Kim talks to Senior Astronomer Seth Shostak about the high-tech tools scientists are using to prove their theory right. Learn why they're certain they'll be proven right within the next 20 years. Learn more about your ad choices. Visit megaphone.fm/adchoices