> Sadly, we've lost Sagan and Randi.
I had the privilege of meeting both Sagan and Randi at different points. Along with Paul Kurtz, also sadly gone now, these were some of the most in influential people in the beginnings of the modern skeptical movement. If you aren't familiar with Prometheus books and CSICOP (now CSI), look them up. You'll find years worth of groundbreaking skeptical reading material.