The state of Earth"s atmosphere affects us all, which explains why the weather is one of the most popular topics of conversation and scientific study. With 23 hands-on experiments, you can investigate specific weather phenomena as well as the climate system in general. Build a model of Earth and its atmosphere and then use it to conduct experiments that show how the global wind system works. Trace air currents from the icy cold poles to the warm equator and back with a wisp of smoke. Model Earth"s heat reservoirs, thermals, and global and local winds. Recreate ocean currents in a small basin of water.