The Appendix of Dune is what solidified it as one of the best books I've ever read. I remember him going in to detail about how the planet had a type of desert

The Appendix of Dune is what solidified it as one of the best books I've ever read. I remember him going in to detail about how the planet had a type of desert flower that would grow at the bottom of dunes that acted as a catch for the morning dew, concentrating it and preventing it from evaporating away and thereby making pockets of water for the local animals.