"Theres chemistry in the air we breathe! Discover how we use elements in the air in our bodies and in our industrial processes, how weve polluted the air, and how were working to clean it up. Add some fun to young readers academic routines with Aha! Academy! With everything students need to know plus brilliant biographies, amazing cross-curricular links, and inspiring career connections, this fun, fact-packed series will keep readers entertained and informed."--Back cover.