I originally watched this show, because I was 11 years old and a Trekkie. Anything with Shatner or Nimoy, and I was there! Still am, actually. However, I really became hooked. I found the speculation fascinating and educational. Now, these shows are wonderful to look back on, because they are so dated. There will always be new information coming about old topics. Amelia Earhart is a good example. There will also be instances where we learn just how flawed science can be. And why we should proceed cautiously when science instructs us on a subject. Case in point: The episode dealing with the "coming ice age"...haha. Yes, only 30 years ago, this was the thinking. Get ready, in 30 years we'll be looking back shaking our heads at the thought of "global warming".