Graham Hancock

But as it started to do what all comets do, which was to break up into multiple fragments, because these are chunks of rock held together by ice. And as they warm up, they split and disintegrate and break into pieces. As it passed through that, its debris stream became larger and larger and wider and wider.

But as it started to do what all comets do, which was to break up into multiple fragments, because these are chunks of rock held together by ice. And as they warm up, they split and disintegrate and break into pieces. As it passed through that, its debris stream became larger and larger and wider and wider.

But as it started to do what all comets do, which was to break up into multiple fragments, because these are chunks of rock held together by ice. And as they warm up, they split and disintegrate and break into pieces. As it passed through that, its debris stream became larger and larger and wider and wider.

And the theory is that 12,800 years ago, the Earth passed through a particularly dense part of the torrid meteor stream and was hit by multiple impacts all around the planet, certainly from the west of North America as far east as Syria. And that we are by and large not talking about impacts that would have caused craters, although there certainly were some. We're talking about airbursts.

And the theory is that 12,800 years ago, the Earth passed through a particularly dense part of the torrid meteor stream and was hit by multiple impacts all around the planet, certainly from the west of North America as far east as Syria. And that we are by and large not talking about impacts that would have caused craters, although there certainly were some. We're talking about airbursts.

And the theory is that 12,800 years ago, the Earth passed through a particularly dense part of the torrid meteor stream and was hit by multiple impacts all around the planet, certainly from the west of North America as far east as Syria. And that we are by and large not talking about impacts that would have caused craters, although there certainly were some. We're talking about airbursts.

When an object is 100 or 150 meters in diameter, and it's coming in very fast into the Earth's atmosphere, it is very unlikely to reach the Earth. It's going to blow up in the sky. And the best known recent example of that is the Tunguska event in Siberia, which took place on the 30th of June, 1908. The Tunguska event was nobody disputes. It was definitely an airburst of a cometary fragment.

When an object is 100 or 150 meters in diameter, and it's coming in very fast into the Earth's atmosphere, it is very unlikely to reach the Earth. It's going to blow up in the sky. And the best known recent example of that is the Tunguska event in Siberia, which took place on the 30th of June, 1908. The Tunguska event was nobody disputes. It was definitely an airburst of a cometary fragment.

When an object is 100 or 150 meters in diameter, and it's coming in very fast into the Earth's atmosphere, it is very unlikely to reach the Earth. It's going to blow up in the sky. And the best known recent example of that is the Tunguska event in Siberia, which took place on the 30th of June, 1908. The Tunguska event was nobody disputes. It was definitely an airburst of a cometary fragment.

And the date is interesting because the 30th of June is the height of the beta Taurids. It's one of the two times when the Earth is going through the Taurid meteor stream. Well, luckily, that part of Siberia wasn't inhabited, but 2,000 square miles of forest were destroyed.

And the date is interesting because the 30th of June is the height of the beta Taurids. It's one of the two times when the Earth is going through the Taurid meteor stream. Well, luckily, that part of Siberia wasn't inhabited, but 2,000 square miles of forest were destroyed.

And the date is interesting because the 30th of June is the height of the beta Taurids. It's one of the two times when the Earth is going through the Taurid meteor stream. Well, luckily, that part of Siberia wasn't inhabited, but 2,000 square miles of forest were destroyed.

If that had happened over a major city, we would all be thinking very hard about objects out of the Taurid meteor stream and about the risk of... cosmic impact.

If that had happened over a major city, we would all be thinking very hard about objects out of the Taurid meteor stream and about the risk of... cosmic impact.

If that had happened over a major city, we would all be thinking very hard about objects out of the Taurid meteor stream and about the risk of... cosmic impact.

So the suggestion is that it wasn't one impact, it wasn't two impacts, it wasn't three impacts, it was hundreds of air bursts all around the planet, coupled with a number of bigger objects, which the scientists working on this think hit the North American ice cap, largely.

So the suggestion is that it wasn't one impact, it wasn't two impacts, it wasn't three impacts, it was hundreds of air bursts all around the planet, coupled with a number of bigger objects, which the scientists working on this think hit the North American ice cap, largely.

So the suggestion is that it wasn't one impact, it wasn't two impacts, it wasn't three impacts, it was hundreds of air bursts all around the planet, coupled with a number of bigger objects, which the scientists working on this think hit the North American ice cap, largely.

Some of them may also have hit the Northern European ice cap, resulting in that sudden, otherwise unexplained, flood of meltwater that went into the world ocean.

Some of them may also have hit the Northern European ice cap, resulting in that sudden, otherwise unexplained, flood of meltwater that went into the world ocean.