We know the actions to be taken to make a house and/or a community less exposed to wildfire. We know exactly what needs to be done to make houses and communities less vulnerable to flooding. We can use berms, diversion channels, holding ponds, cisterns, bioswales and permeable surfacing to direct water to safe locations and keep people and property out of harm's way. What we need to do is mobilize known solutions to known problems, and we need to do it rapidly.
Just to be clear, people need to understand that climate change is irreversible, period. Climate change is here to stay. We're not going backwards. All we can do is slow it down. If we think extreme weather is extreme now, just hold on. It's going to get a lot worse going forward.