Why is this an existential threat?
In addition to the direct damage a nuclear exchange would inflict, it could also ignite fires that throw large amounts of sooty smoke into the atmosphere, causing sunlight to be blocked and global temperatures to drop (a nuclear winter
). Such a dramatic shift in climate could make food very difficult to grow, causing a collapse that would be very hard to recover from or, in the extreme case, extinction. Examples of projects in this category could include alternative food production research, modeling conflict scenarios, etc. Learn more