Graham Hancock

So what everybody's agreed on is the Younger Dryas was bad, but there is dispute about what caused it. I personally have found the Younger Dryas impact hypothesis to be the most persuasive, which most effectively explains all the evidence.

So what everybody's agreed on is the Younger Dryas was bad, but there is dispute about what caused it. I personally have found the Younger Dryas impact hypothesis to be the most persuasive, which most effectively explains all the evidence.

In a sense, it's not the impact hypothesis that is central to what I'm saying. It's the Younger Dryas that's central to what I'm saying. And the Younger Dryas required a trigger. Something caused it. I think the Younger Dryas impact hypothesis, the notion that we're looking at a debris stream of a fragmenting comet, and we can still see that debris stream because it's still up there,

In a sense, it's not the impact hypothesis that is central to what I'm saying. It's the Younger Dryas that's central to what I'm saying. And the Younger Dryas required a trigger. Something caused it. I think the Younger Dryas impact hypothesis, the notion that we're looking at a debris stream of a fragmenting comet, and we can still see that debris stream because it's still up there,

In a sense, it's not the impact hypothesis that is central to what I'm saying. It's the Younger Dryas that's central to what I'm saying. And the Younger Dryas required a trigger. Something caused it. I think the Younger Dryas impact hypothesis, the notion that we're looking at a debris stream of a fragmenting comet, and we can still see that debris stream because it's still up there,

and we still pass through it twice a year, is the best explanation. But I don't mind other explanations. It's good that there are other explanations. The Younger Dryas is a big mystery, and it's not a mystery that's been solved yet. And that word advanced civilization... This is another word that is easily misunderstood.

and we still pass through it twice a year, is the best explanation. But I don't mind other explanations. It's good that there are other explanations. The Younger Dryas is a big mystery, and it's not a mystery that's been solved yet. And that word advanced civilization... This is another word that is easily misunderstood.

and we still pass through it twice a year, is the best explanation. But I don't mind other explanations. It's good that there are other explanations. The Younger Dryas is a big mystery, and it's not a mystery that's been solved yet. And that word advanced civilization... This is another word that is easily misunderstood.

And I've tried to make clear many, many times that when we consider the possibility of something like a civilization in the past, we shouldn't imagine that it's us, that it's something like us. We should expect it to be completely different from us, but that it would have achieved something certain things.

And I've tried to make clear many, many times that when we consider the possibility of something like a civilization in the past, we shouldn't imagine that it's us, that it's something like us. We should expect it to be completely different from us, but that it would have achieved something certain things.

And I've tried to make clear many, many times that when we consider the possibility of something like a civilization in the past, we shouldn't imagine that it's us, that it's something like us. We should expect it to be completely different from us, but that it would have achieved something certain things.

So amongst the clues that intrigue me are those precessional numbers that are found all around the world and are a category of ancient maps called portolanos, which suddenly started to appear just after the crusade that entered Constantinople and sacked Constantinople. The portolanos suddenly start to appear. And they're extremely accurate maps.

So amongst the clues that intrigue me are those precessional numbers that are found all around the world and are a category of ancient maps called portolanos, which suddenly started to appear just after the crusade that entered Constantinople and sacked Constantinople. The portolanos suddenly start to appear. And they're extremely accurate maps.

So amongst the clues that intrigue me are those precessional numbers that are found all around the world and are a category of ancient maps called portolanos, which suddenly started to appear just after the crusade that entered Constantinople and sacked Constantinople. The portolanos suddenly start to appear. And they're extremely accurate maps.

Most of the ones that have survived are extremely accurate maps of the Mediterranean alone, but some of them show much wider areas. For example, on these Portolano-style maps, you do find a depiction of Antarctica again and again. And another thing that these maps have in common is that many of the mapmakers state that they based their maps on multiple older source maps, which have not survived.

Most of the ones that have survived are extremely accurate maps of the Mediterranean alone, but some of them show much wider areas. For example, on these Portolano-style maps, you do find a depiction of Antarctica again and again. And another thing that these maps have in common is that many of the mapmakers state that they based their maps on multiple older source maps, which have not survived.

Most of the ones that have survived are extremely accurate maps of the Mediterranean alone, but some of them show much wider areas. For example, on these Portolano-style maps, you do find a depiction of Antarctica again and again. And another thing that these maps have in common is that many of the mapmakers state that they based their maps on multiple older source maps, which have not survived.

These maps are intriguing because they have very accurate relative longitudes. Our civilization did not crack the longitude problem until the mid-18th century with Harrison's chronometer, which was able to keep accurate time at sea. So you could have the time in London and you could have the local time at sea at the same time, and then you could work out your longitude.

These maps are intriguing because they have very accurate relative longitudes. Our civilization did not crack the longitude problem until the mid-18th century with Harrison's chronometer, which was able to keep accurate time at sea. So you could have the time in London and you could have the local time at sea at the same time, and then you could work out your longitude.

These maps are intriguing because they have very accurate relative longitudes. Our civilization did not crack the longitude problem until the mid-18th century with Harrison's chronometer, which was able to keep accurate time at sea. So you could have the time in London and you could have the local time at sea at the same time, and then you could work out your longitude.