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Science
LEADING EDGE
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Thursday 21:00-21:30
Leading Edge brings you the latest news from the world of science. Geoff Watts celebrates discoveries as soon as they're being talked about - on the internet, in coffee rooms and bars; often before they're published in journals. And he gets to grips with not just the science, but with the controversies and conversation that surround it.
radioscience@bbc.co.uk
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GEOFF WATTS
Geoff Watts
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ThursdayÌý30ÌýSeptemberÌý2004
Bosumtwi Drilling Station

This week, speed dating for molecules, an asteroid crater in Ghana, dyslexia and the Miami Blue butterfly.

Molecular Speed-Dating

A novel way of discovering new kinds of chemical reactions.Ìý

Molecules are introduced to thousands of potential partners to see if they are chemically compatible.

Lake Bosumtwi Impact Crater

Just this week the mountain sized asteroid Toutatis hurled past our earth.Ìý

The consequences of it actually colliding with us don't bear thinking about, but it's happened often enough in the past: twenty times in Africa alone, one of the largest and most recent being in Ghana.

By drilling into the sediment at Lake Bosumtwi, earth scientists hope to reveal the role of the tropics in climate change.

Dyslexia

Scientists studying Chinese children with reading difficulties have shown that the causes of dyslexia are not universal, they vary between languages.

Regenerating the Miami Blue Butterfly

Geoff Watts visits the Butterfly Rainforest in Florida, home to hundreds of free-flying butterflies, where scientists are hoping to regenerate the endangered Miami Blue.

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