Space Archaeology: the Future of Studying the Past

In 2018, Elon Musk launched his own red sports car into outer space. But that's not the only thing in Earth's low orbit. This archaeologist mines the heavens to discover the history of life on Earth. And she likes to start with the humble zip tie. Guest: Alice Gorman, author of "Dr. Space Junk Vs. The Universe: Archaeology and the Future"