Dig It! The Secrets of Soil
This site is aimed at kids, but it is super cool. I especially like the “Greenhouse Gas Calculator” game that is on it, where kids can pick a crop, to till their fields or not, and whether or not to add pesticides. CO2 molecules rise (or don’t rise) out of the soil as you play the game until your emissions are calculated at the end. The current conditions tab lets you see sea surface temperatures, rainfall, and oceanic chlorophyll and vegetation. You can read about Virginia’s state soil, Pamunkey, and check out the tab for educators.
Also you can check out their main page, Forces of Change.