00:01Someone tried to wipe out every man on Earth. And they almost pulled it off.
00:06This is not science fiction. It is written inside your DNA.
00:11Geneticists studying modern human genomes found something terrifying,
00:14a few thousand years ago, 95% of all men were erased from the gene pool.
00:18Only 1 man in 20 passed on his line.
00:21Women outnumbered men by 17 to 1.
00:24Translate that to today's population, and it equals 3.9 billion men, gone.
00:28Both world wars combined would not come close.
00:31And here is the strangest part.
00:33The bottleneck targeted men only.
00:36Female genetic lines came through almost untouched.
00:39So who did it?
00:40Archaeologists opened the ground and found the answer.
00:43In Europe alone, more than 250 mass graves have been unearthed, dating to the Stone Age.
00:48Bodies were struck down from behind, head split, bones turned into tools and cups.
00:53Entire villages were wiped out in a single night.
00:55And the cause behind the bloodiest period in human history.
00:59You will never guess it.
01:01Farming.
01:02Roughly 10,000 years ago, humans learned to grow crops and raise animals.
01:06Historians call it the Neolithic Revolution.
01:09Before that, we were wanderers, following the herds, eating whatever we could find.
01:13Farming changed everything.
01:15For the first time, people had permanent homes, granaries, livestock, and property they could pass to their children.
01:21Villages appeared.
01:23Populations exploded.
01:25It sounds like the dawn of civilization.
01:27But it was also the moment the gates of hell swung open.
01:30Because the moment you own something, someone else has a reason to kill you.
01:34Your grain, your land, your women, all of it became loot.
01:37And there was a deadlier consequence.
01:40Settled life gave humans the ability to organize real military force.
01:44In the old days, a fight meant a few dozen people on an open plain.
01:48Now a raiding party of hundreds could march through the night, arrive at your village, kill the men, take the
01:52stores, and drag away the women.
01:54This is not speculation.
01:56It is written in the bones.
01:58In 2015, geneticist David Reich and an international team analyzed 456 chromosome sequences from around the world.
02:05The results, published in the journal Genome Research, stunned the academic world.
02:10Between 5,000 and 7,000 years ago, male chromosome diversity collapsed.
02:14The effective male population shrank to 1 20th of its former size.
02:18In the same period, mitochondrial DNA, which passes through the maternal line, stayed perfectly normal.
02:24It was even growing.
02:26Women were fine.
02:27The ones who vanished were men.
02:29Plague would have killed both sexes.
02:32A volcano, an earthquake, would not have chosen a gender.
02:35Only one explanation fits, large-scale, organized, sustained warfare between human groups, aimed specifically at men.
02:42The archaeology backs it up.
02:44In southern Germany, at a site called Tallheim, archaeologists uncovered 34 bodies pressed into a single pit, 16 children, 9
02:51adult men, 7 older women.
02:53The detail that chills you is this.
02:55Not one of those skeletons carried a defensive wound.
02:58Nobody got the chance to fight back.
03:01Every one of them was struck from behind while running.
03:03The weapons were farming tools.
03:06Stone axes for splitting skulls.
03:08Stone hose for breaking bone.
03:10And the numbers get worse.
03:12Of more than 2,300 Neolithic skeletons studied, over 10% carry weapon trauma.
03:16In Spain, 338 skeletons were examined, 23% showed signs of violence.
03:2397% of those injuries were on adult men.
03:25And 80% had healed before death, meaning these men survived one attack, and were struck down again later.
03:31Average life expectancy in the Stone Age was 20 to 33 years.
03:35Living to 33 was already a triumph.
03:38And if you were a man, you were holding a ticket that could be cancelled at any moment.
03:42How did thousands of years of nightmare finally end?
03:45Honestly, there was never a clean ending.
03:47Wars grew larger.
03:49Swords became firearms.
03:51Death tolls climbed.
03:53But populations grew faster, so the proportion killed fell.
03:56Then came states and empires, and trade and diplomacy replaced some of the violence.
04:01But the real turning point is astonishingly recent.
04:04Only after the Second World War did global armed conflict begin a steady decline.
04:08Your life expectancy today is more than triple that of the Stone Age.
04:12You do not worry about someone breaking down your door at midnight.
04:15Remember this, that safety was bought with 7,000 years of blood.
04:19And the great genetic massacre of the Stone Age is still inside every cell of your body.
04:23If you are a man, your chromosome line most likely descends from that one survivor in 20.
04:28Your ancestors were the ones still standing at the end of a very long line of blood.
04:32They were not necessarily the strongest, not necessarily the smartest.
04:36But they were lucky enough.
04:38Or cruel enough.
04:40That calm you feel right now, sitting in front of a screen, is not a gift.
04:44It is a civilization built out of the dead.
05:25You Grammary Street
