Jessica Wan models climate processes. She explains to Patricia Quinn and Robert Tulip that the effects of marine cloud brightening may be beneficial today, but not by mid-century, when the climate will be warmer. Such an intervention done locally will have global effects that are hard to predict, so it is important to do research now about these processes. For the video, audio podcast, transcript and comments: https://tosavetheworld.ca/episode-621-oceans-and-spray.