They're hiding the fact that our weather gets really, really bad every 200 years. Hence why they're building tunnels and cities underground, and why (((they))) created the "climate change" hoax. All for the $heckle$. I firmly believe that the Yellowstone Caldera erupted somewhere around 1500's. It, or others known or unknown, were the cause for the Black Death. The air quality became toxic. They're covering up history so they can profit and live elegant lives.