Does life exist elsewhere in the universe? It's a question as old as time. On this month’s episode of the HDSR podcast we find out everything there is to know about life beyond earth by talking to the foremost experts who seek data and evidence to investigate the question, “Are we alone?”

Our guests are:

• Abraham (Avi) Loeb, the Frank B. Baird, Jr., Professor of Science at Harvard University, Director of the Galileo Project and the Black Hole Initiative at Harvard University, and the bestselling author of Extraterrestrial: The First Sign of Intelligent Life Beyond Earth and Life in the Cosmos.

• Nick Pope, former civilian employee of the UK Ministry of Defense where his duties included investigating UFO sightings to assess the defense implications. Currently he works as a freelance journalist and broadcaster, specializing in UFOs, the unexplained, and conspiracy theories.