Yeah, the usual story how technology will 'save us.' Sorry, it is only through a societal wake up and personal actions that we will have a chance of mending the life support systems on this planet.

Very interesting story thank you. But I could not resist a smile when I read the line.

"Cement, for instance, is used to make the concrete required to build homes, hospitals and schools."

Aliens from exactly which planet are intended as the readers ?

Until we have orbital solar it is better for us to have more nuclear reactors. The Russian 800 series breeder reactor was online in 2018 and is outputting nearly 800 MW's of power reusing partial fuel from dismantled nuclear weapons. Clean energy and removing WMD's.