The Skeptics Guide #537 - Oct 24 2015

Forgotten Superheroes of Science: Maria Sibylla Merian; News items: Placebos Getting Stronger, Danish Zoo Hubbub, Oswald Backyard Photo, Mars via the Moon; Special Report: Back to the Future Day; Who's That Noisy; Your Questions and E-mails: Consoling Atheists; Science or Fiction