1. How do the seasons work?

2. Who installed the firmament (supposed dome over the Earth).

3. If all countries collude to defend the secret of the flat earth from the masses by sending 10-20 thousand naval ships to patrol the ice wall, why has no crew member from any of these ships come out and spoken of the conspiracy even after retiring? Surely, a story like this would be worth a fortune to the media.

4. What explains the error in the observations made by the greek mathematician Eratosthenes

5. How does GPS work? More importantly,  Who has anything to gain by saying that the Earth is round vs. flat?