Considering how very old the Universe is, have you ever wondered why Earth has not been invaded by aliens? These humorous short science fiction stories suggest that it is the pursuit of four favourite pastimes enjoyed by teenagers that have saved the Earth from Alien Invasion. Namely: - eating fast food, especially the very salty ones - playing music very loudly - playing computer games - and communicating with their friends at every possible moment by texting them. Mavis Brown has been a published writer for children since 2000.