Carl Sagan was a noted astronomer, popularizer of science, and UFO skeptic. Though fascinated by the possibility of extraterrestrial life, Sagan was not impressed with the evidence, or lack of same, behind UFO stories. His favorite response was: "Extraordinary claims require extraordinary proof."
That sounds good, and may even be correct, but it does seem Dr. Sagan left an element out of his statement. Woodward and Bernstein, after all, did not have Watergate fall into their laps. Piecing his theory of evolution together took Charles Darwin twenty years and more. Surely the second part of Dr. Sagan's statement must be: "Acquiring extraordinary proof requires extraordinary effort."
So, the question would seem to be: Has establishment science or the mainstream media made an extraordinary effort to get to whatever lies at the heart of those few UFO cases that resisit explanation?