What would you do if you had just ten weeks to prepare for the largest asteroid strike in 65 million years?

Well, if you're Spacewatch Director Henry Jackson, you prepare people for mile-high tsunamis, nuclear-like pressure blasts, record-breaking earthquakes, a nuclear winter that causes global famine, and a trillion tons of falling molten rock called regolith that destroys billions of roofs and roads, sending civilization back centuries.

RegolithBrent Reilly