Written by an award-winning historian of science and technology, Planet in Peril describes the top four mega-dangers facing humankind – climate change, nukes, pandemics, and artificial intelligence. It outlines the solutions that have been tried, and analyzes why they have thus far fallen short. These four existential dangers present a special kind of challenge that urgently requires planet-level responses, yet today's international institutions have so far failed to meet this need. The bo...