Mr. Nitze talks to NetGreen about a form of geoengineering that could mitigate climate change. Geoengineering is also called climate engineering. It is the concept of manipulating the Earth in order to lessen the effects that greenhouse gases have on the climate. In this episode, Mr. Nitze describes a form of oceanic geoengineering that would reflect heat back into the atmosphere rather than being absorbed by the ocean.