We’ll look into the still unsolved 1981 disappearance of Adam Walsh, and how his abduction and murder changed how law enforcement responds to missing child cases. Then, Eric Bogosian and Deb Singer discuss the tumultuous history of the experimental Soho performance space, The Kitchen. Ina Caro tells how you can travel through French history by train. Our Backstory segment looks at the future of the space program. And on Underreported, find out about the prospects of deep sea mining for rare earth minerals in the Pacific Ocean.