They’ve been studying these in Australia for years, but it doesn’t seem to be gaining much political interest. Which, isn’t surprising given the Australian gov’s typical take on environmental issues (often akin to ‘can’t cars just run on coal?’), but if someone could see the bigger picture these would be amazing for Australia. We have a surplus in free energy from the sub and a huge amount of land that’s already been cleared for agriculture, but the soil is poor and water scarce. We really need these. And it’s kind of future proof - most of our weird comes from exporting energy and minerals, all of which are finite.