well if this book was labeled by category i would definitely look for the origins of the earth and how everything started. Really there is an unlimited amount of questions to ask. Area 51 would be one of those and if aliens really did crash there back in the day. I cant really remember if this blog was supposed to be about just earth or the whole universe so ill just stick to earth. if i could find the answer to anything another question i have wanted to know the answer to is afterlife...if that has anything to do with earth that is