Sustainable Seafood, 3D Printed Houses, Living Longer

Why more and more seafood companies are making sustainable fishing part of their standard practice. Plus, a couple in the Netherlands just moved into a house that was built by a 3-D printer. Then, some tips on avoiding crowds at national parks this summer. Also on today's show: why the American lifespan is extending, and gene therapy could be the answer for people who suffer chronic pain. (Photo credit: Bart van Overbeeke)