By Luc Olinga The billionaire and Tesla CEO is worried about our civilization. Elon Musk navigates between running his businesses and trying to save the planet. At least, he tries to draw attention to global issues which he considers urgent to tackle. For some time, the richest man in the world, with a net worth on paper estimated at $210 billion on May 18 by Bloomberg Billionaires Index, has been sounding the alarm about the decline of the population. He started byworrying about the largest historical drop in inhabitants in Japan in 2021. Then, instead of marveling at the beauty and history o…