I loved Earth Science in high school, especially the sections on rocks and the earth's crust and the weather! I used to be able to tell you the different names of cloud formations, but sadly I don't remember them now, which made me want to get a cloud formation print!
Here's what I could scare up:
Cloud Formations Small Print: terrain
The Ten Primary Cloud Formations: Etsy
Cloud Formation and Precipitation at an Occluded Front: All Posters
A Pictorial Guide to the correlation between emotions and cloud formations: Shannon May
1890 Clouds: Ebay