1.) Simple answer is that the vast majority of them returned home. 2.) Australia, Cuba, Mexico, the Atlantic; pretty much all of Earth was hit. 3.) We know he determined the location of Earth independently from Regret, but if he also found the portal is unknown. If he didn't, then he knew from Regret's fleet. 4.) I don't really know what you want from [i]how[/i] it was rebuilt. New Mombasa, based on the level Stonetown, is being rebuilt. It will not be returned to its former glory though, as a portion of the was built on top of the now unearthed portal. 5.) Yes. 6.) Typically, cities with "New" prefix are megacities with very large populations. New Pheonix was attacked by the Didact most likely because of its large population relative to the surrounding population centers. New Mombasa was attacked because a portion of it rested on top of the portal to the Ark. [quote]Playing ODST really gave me a lot more questions that I missed as a kid[/quote]For added interest, here's part of a mystery that's never been solved. The 'Y' shaped glyphs that you can only see with VISR mode activated are left by the Engineers. The only hint we have as to their meaning is that the 'Y' represents the Keyship.