Christopher Berry
speaker
160 appearances
1 recordings
1 series
first heard Jul 2026
last heard 2 Jul
Christopher Berry’s voice in public audio — every appearance, attributed to the second.
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recordings per month · last 12 monthsRecordings per month over the last 12 months — 1 in all, peaking in Jul 2026 with 1.
Appearances
So the first seeds are probably...
in plants which will later become trees rather than in the earliest trees.
That's right.
I mean, I'm massively impressed by how much carbon can be sucked out of the atmosphere by trees.
It's amazing.
If we look at the NOAA graphs of carbon dioxide changing over the year, in the northern hemisphere summer, we can pull out 1% of the...
carbon dioxide in the atmosphere in one year.
It then gets released back again as the leaves sort of decay.
So over millions of years, this has got to be a really serious thing.
So you can model that, as Jenny says.
And one interesting thing that I think, out of all the papers I've read, I've been down to South Africa, which was about 70 degrees south, back in the late Devonian, and there's archaeopterist trees there.
And that's more...
near the pole than Reykjavik.
Why were they in the late Devonian trees there?
Because Jenny said that all this carbon dioxide is being pulled out of the atmosphere.
You'd expect that the planet would just get cooler and cooler and cooler.
But the models of my French colleagues actually suggest that temperature stayed the same as all this carbon dioxide gets cooled down.
pulled out of the atmosphere.
And in their model, which is a conceptual model, it's not real life, in their model, the growth and spread of the forests changes the way in which the earth reflects sunlight.
So instead of the sunlight bouncing off bare rock,
Showing 101–120 of 160 · page 6 of 8
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