"As awful as this pandemic is, climate change could be worse." So says billionaire philanthropist Bill Gates in a recent blog post.

"A global crisis has shocked the world. It is causing a tragic number of deaths, making people afraid to leave home, and leading to economic hardship not seen in many generations. Its effects are rippling across the world," Gates wrote. "Obviously, I am talking about COVID-19. But in just a few decades, the same description will fit another global crisis: climate change."