UFO research in the twentieth century was a daunting enterprise, fraught with misidentifications, blurry photos, and fraud. Now, with millions of drones in our skies and superb computer graphics, the twenty-first century threatens to overwhelm ufology with insurmountable trickery and truly unidentifiable flying objects. How do we make sense of UFOs? Could a lifetime of paranormal activity be real, or is it all in your mind? Are the craft that appear...