> Hitting the earth at a speed of perhaps 30 km (19 mi) a second,[9]:10 the kinetic energy of the impact was estimated in 1996 to be roughly 3×1023 joules,[30] more than a billion times more energy than the atomic bomb dropped on Hiroshima, Japan.
Humanity can't even master a force of the chicxulub impactor and the planet is fine.

Also https://pastebin.com/cWs6A7rR

Would You Like to Play a Game?
A Primer on National Nuclear Strategy, and Individual Survival
By A. Nonymous

Few subjects have been less understood in the last century than global thermonuclear war. Pop culture and journalism have depicted it as ending human civilization at the least, and all life on Earth at the worst. In doing so, they have propagated myths and inaccuracies that have actually reduced the chances of individuals surviving.

Nuclear war is a Bad Thing(tm). That much should be obvious. But, the details matter. What would happen to you, as an individual, and your friends and family, would depend on a variety of factors, many of which you actually have considerable control over.

Part One - A Strange Game; The Only Winning Move Is Not to Play

First, let's address one of the biggest elephants in the room: MAD. Mutual Assured Destruction has never been an official policy of the United States (or in any records recovered after the fall of the Soviet Union). Early on in the Cold War, WWII thinking regarding strategic bombardment still held considerable sway, with factories and raw resources considered valid targets. However, as the number of warheads on each side grew into the tens of thousands, it began to make less sense to target the enemy's cities, because there was now something much more important to shoot at--the enemy's warheads themselves.