Tag Archives: Ice Age

A Theory of Snow Ages

I must be perverse. I always seem to end up thinking what nobody – or hardly anybody – else thinks. For example, when a fireball exploded over Chelyabinsk on 15 February 2013, on the same day that asteroid 2012 DA14 … Continue reading

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The Possessed

From time to time I get possessed by ideas. And throughout 2018 I’ve been possessed by a new idea. It’s an idea about ice ages. And my idea was that when, as periodically happens, the Earth gets covered in ice, … Continue reading

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Imaginary New Worlds

I’ve been constructing an imaginary new world over the past few days. It’s one in which the last ice age had ice extending from the North Pole to the Tropic of Cancer. It’s a vision of the world that came … Continue reading

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Journey Into The Underworld: 4

I’m on holiday. I’m on vacation from my day job of thinking about smoking bans and the EU and Donald Trump and all the rest of it. Instead I’m in Cuzco. Or Luxor. Or maybe Gunung Padang. Think of me … Continue reading

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Journey Into The Underworld: 3

A couple of days back I showed one contemporary idea of how the world looked at the last glacial maximum, 20,000 years ago: But after managing, using a simple simulation model, to advance an ice sheet all the way to … Continue reading

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Journey Into The Underworld: 2

Yesterday I sketched out how I’d constructed a heat flow simulation model of a core extending from the centre of the Earth to its atmosphere at its surface. Today I’d like to explain how I used this model to estimate … Continue reading

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Journey Into The Underworld: 1

In a world where lots of people think that the world is experiencing Global Warming, I’ve been thinking all year about ice and ice ages. For according to the Vostok and EPICA ice cores, it was only 12,000 years ago … Continue reading

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