In the summer of 1815, snow fell every month in New England. Was this related to the volcanic eruption of Tambora in Indonesia earlier in the year? Young scientists design their own experiments to research the long-term effect a volcanic...

A wonderfully complete primer on exothermic reactions in the context of chemical spills. Covers Reactions with Air or Water, Combustible Organics, Polymerization Reax, Decomposition, Corrosion, and much much more.

Learn about the atmosphere, it's make-up, the layers, the hydrologic cycle and more. The National Weather Service presents this site, including learning lessons and review questions.

This site provides an extensive amount of weather information. Includes current information, forecasting, and historic weather related events. Weather map symbols and terminology explained.