Both AI and energy are extremely fashionable, and already being worked by plenty of smart people. Do you think you can have an impact there? You could alterna

Both AI and energy are extremely fashionable, and already being worked by plenty of smart people. Do you think you can have an impact there? You could alternatively pick something that is not quite so fashionable. Eg the food system, which will require very serious attention, and perhaps have at least as much environmental impact as energy. There seem to be many areas in need of improvement, including distribution, waste handling, economics/politics/equality, arresting/reducing land use, innovating more sustainable tastes, innovating production; synthetic meat, dairy, juices, pulps, hydro-/aero-ponics, self-contained fish farms, etc.