Beyond Earth – talking about space travel

 This week we’re learning more about space travel and planetary colonization. Charles Wohlforth discusses his new book, Beyond Earth, and answers questions about humanity and its potential for reaching new worlds. It’s a scientific, and economic, examination at what it would take for humans to leave this planet to explore new worlds and possibly colonize them.
From a leading planetary scientist and an award-winning science writer: a propulsive account of the developments an