Hi, If you don't find the earth science topic you are searching for, make a comment on this site and/or send me a message via the tab ASK Janice on the navigation bar. Earth Science is all about our earth and its many biomes as well as changes, including weather, tides, earthquakes, etc... This is a dynamic site, meaning new materials are added often. Sign up for a newsletter so you will receive the latest articles. Sincerely, Janice