I have shelves of science non fiction books. I also have a bunch of poetry books about science topics but I really had to think about what to share. I didn't teach science last year so they aren't as fresh in my mind.
I'm actually listing this book more as a representative for the series. I love graphic novels and so do my kids. Graphic Libraries has comic style books on tons of science topics. In addition to this one I have sound, light, motion, ecosystems, food chains and probably some others that aren't coming to mind right now.
When I first got some of these I purchased them as ebooks. This worked great because I could show the pages up on out ActivBoard. I have different kids read the parts for a character for that chapter. Then we switch so others can have a chance. The problem is the books were expensive in that format. Now they are available through Amazon for just over $7 each. The downside to he actual books is that they aren't as good for group reading because the pictures are pretty small. Of course a document camera would help.
If you teach middle grades (and maybe up a bit) science I would certainly check them out. Graphic Library also publishes a bunch of history and biographies as well.
Collaboration Cuties to see some other Must Read Mentor Text science suggestions.