It was just two weeks ago that U.S. Vice President Mike Pence announced that the country will send people to the moon again, within five years.
The announcement no doubt cheered people who want to see us go back to the moon and establish an ongoing presence there. Paul Spudis was a big proponent of going back to the moon.
Before he died last year, Spudis wrote The Value of the Moon: How to Explore, Live, and Prosper in Space Using the Moon's Resources.
The author visited in May 2016, and we revisit the interview here.