There's tons here, too, once we get past the laser focus on removing CO2 and averting global warming. Off the top of my head: 1.) Every major city needs evacu

There's tons here, too, once we get past the laser focus on removing CO2 and averting global warming. Off the top of my head: 1.) Every major city needs evacuation plans, and evacuation routes, in case of a natural disaster. Because disasters will get more frequent. Right now these are terribly inadequate, as we saw with Hurricane Rita. Solving this starts with FEMA, but probably requires advances in transportation, ability to quickly lay new infrastructure, construction technologies, information & coordination tech. 2.) Low-lying cities will need large seawalls and levees, like what Foster City just built. It cost them a few billion, but it's still cheaper than rebuilding all the buildings after a flood. Imagine scaling this up to every coastal or river city. 3.) We need better strategies to let wildfires burn in the wild yet quickly arrest their progress when they get close to populated areas. 4.) We need cheap insulation, and even cheaper ways to retrofit all the old housing stock in the U.S. with cheap insulation. 5.) We need more efficient and cheaper HVAC systems, ideally ones that don't burn fossil fuels. 6.) We need huge investments in the electric grid to support EVs + beefier HVAC. We also need software systems to manage this smartly, so eg. we can stagger EV charging and not put huge loads on the grid all at once. HVAC also serves as a big battery in a well-insulated home; you can time heat-pump loads for when they'll be most effective and retain that heat within the home during peak load times. A lot of these will also require extensive public/private cooperation, which is its own sort of problem, and one that's also fairly amenable to software assistance (once the people in charge get tech-savvy enough).