I really, really liked Life As We Knew It. I felt like it really could happen, and it was pretty realistic. 
 Miranda was pretty spoiled at the beginning of the book, but by the end, she really matured. It was interesting to see how Miranda, her brothers, and her mom survived an asteroid hitting the moon and knocking it closeer to the earth. 
 It wa a little weird reading it, because I felt like I needed to go out and stock up on food, water and other supplies. It makes you think about what you would do, and if you'd be willing to sacrifice yourself in order to let someone else you love survive. I'm not sure if I could, or if I'd want to...because the world was pretty bleak in the book. Not enough food or water, ash everywhere, ridiculous weather and natural disasters... 
 I also like that it's told in journal entries. Miranda's keeping track of what happens, and I thought that made the story a lot more interesting. 
 It gets a 4 out of 5. It makes you think, and I can't wait to read the rest of the series.