Would also recommend Joe Rogan podcast, most recent a few weeks ago, with Graham Hancock. Discussion centered around his new book on North America.
The archeological scientific evidence is coming around to Hancock with regard to age of structures specifically.
Today, also, Howard Hughes The Unexplained podcast had on Whitney Strieber, author of Communion, who I believe is pretty credible, although I disagree with him about religion. Very interesting info. about scientific research being done in San Antonio, and some Roswell insight (a close relative of his was an involved military official).