Stratospheric aerosol injection, which is a very promising climate engineering approach, involves the release of reflective particles such as sulfate into the stratosphere to reflect sunlight into space (Figure 2). It was first proposed by Mikhail Ivanovich Budyko in 1974 (Rasch et al., 2008/Keith, 2000). This climate engineering approach developed out of observations that atmospheric sulfate injections of large volcanic eruptions are generally followed by 1 to 2 years of cool weather over large areas of the planet. Other aerosols that are being considered for this solar radiation management approach include black carbon, metallic aluminum, aluminum oxide and barium titanate (Effiong and Neitzel, 2016). High altitude airplanes, tethered balloons, high-altitude blimps, and artillery have been proposed to distribute the particles into the stratosphere. As mentioned above, stratospheric aerosol injection does have drawbacks such as decreased rainfall in some regions. This method, however, is feasible, relatively inexpensive and well-studied based on evidence from numerous recent and historic volcanic eruptions (e.g. Mount Pinatubo in 1991).