Alfred Russel Wallace has always been a favorite historical figure of TPP's. He independently arrived at the idea of natural selection, much to Charles Darwin's dismay. Here is a link to an episode in his life that teaches an interesting lesson about science. Wallace took up a wager to anyone who could prove the Earth wasn't flat. Wallace's approach was quite interesting in that it offered direct observational evidence of the Earth's curvature, but he still "lost" the wager. This is a very well-written, brief account of that interaction by Dana Hunter of Rosetta Stones.
Addendum: Should have waited just 5 minutes to post this blog. Here's a review of a book about the history the FLAT EARTH for those of you who never looked into this before.
19 minutes ago in Variety of Life