The US government spent 21 years trying to weaken hurricanes. Project Stormfury flew Navy aircraft into eyewalls from 1962 to 1983, seeded them with silver iodide, and shut down because nobody could prove the seeding did anything. Hurricanes fluctuate so much on their own that every result drowned in noise. Today, two Cambridge aerospace engineers relaunched the mission as a YC startup. The physics of why clouds are beatable is the fun part. A cloud looks solid but is over 99.99% air. The…