
Despite much ballyhoo in the media, all efforts thus far have failed to provide substantive evidence that might link the appearance of UFOs, now called UAPs (unidentified aerial phenomena), with aliens from other planets. This failure results from limitations imposed by both biology and distance. As Morton Tavel explains, when these factors are combined, they render any such contacts virtually impossible.

For the first time in history, the human species has the technology to destroy itself. But having developed that power, humans are also able to leave Earth and voyage into the vastness of space. After millions of years of evolution, we’ve arrived at the point where we can settle other worlds and begin the process of becoming multi-planetary. How did we get here? What does the future hold for us?
In Science Salon # 120 Michael Shermer speaks with Andrew Rader about his book Beyond the Known: How Exploration Created the Modern World and Will Take Us to the Stars. PLUS is Göbekli Tepe, a 12,000 year old site in Turkey, proof of a lost civilization, or is there another answer?