>The plans you're suggesting as too idealistic don't require the cooperation of every human being on the planet. Every human being on the planet is part of the

>The plans you're suggesting as too idealistic don't require the cooperation of every human being on the planet. Every human being on the planet is part of the problem. And yes, turning the Sahara into enough tidal pools as outlined by that Y Combinator page would be the largest project in human history, the most expensive project in human history, would require more power plants than currently exist on the planet to be constructed solely for powering the project, would create an unimaginable amount of brine that couldn't be dumped back out at sea as it would kill all of the costal life of Northern Africa, would require construction efforts in 11 countries... Solar has a very limited range of latitudes that make it effective and would require massive amounts of batteries to replace power at night/during periods of less than cooperative weather. Wind is even more limited in where it may be employed, you need consistent wind but not too much wind. Hydroelectric requires dams and flooding large swaths of land and are pretty limited to where they can actually be constructed. Writing some code that makes a process work a little more efficiently doesn't make a meaningful impact on overall power consumption. Etc etc, so on and so forth. All human beings are causing the problem (even primitive, uncontacted, tribes as they're likely generating more carbon from their fires than they are actively sequestering) so all human beings need to participate in retarding, and reversing, their greenhouse gas emissions.