io9 Roundup of Superhero, Political and Futurist Articles, Part 4

This weekend we've got a roundup of recent, relevant, and few just really cool, articles from the science, science fiction and fantasy blog io9.com. Stay tuned for all the parts.

• Gift Guide: Graphic Novels That Even Non-Comics Fans Will Love to Read 
• Retro travel posters for the world’s top cryptozoological hot spots
• The 10 Books You Absolutely Must Read to Understand the History of Earth
• Humans can survive the harsh conditions found on Mars, scientists say
• “Heroes of Science” action figures are light on “action,” heavy on the “heroes” 
• Why Marvel’s upcoming “Age of Ultron” may actually be the event that changes everything 
• 21 Pictures that Sum Up the Whole History of Science Fiction
• Hitler’s forgotten attempt to build the world’s largest Olympic stadium
• The extremely tentative but potentially triumphant return of Rom: Spaceknight 
• Marvel’s Cinematic Universe Mega-Set returns — and a new Thor alternate ending! 
• Here are the most futuristic European cities that never existed
• Is this what students in Louisiana are learning about evolution?