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H is for Hypersonic air travel

The hypsersonic aircraft designed to travel at many times the speed of sound

The Hyper-X aircraft, an unmanned protype scramjet designed to travel at many times the speed of sound, prepares for its first test flight. Why urbanisation means a switch from intestinal worms to asthma in Ethiopia. Fossil of hadrocodium, a tiny 195-million-year-old mammal, found in Yunan province, China. Scientists working on photonic crystal fibre find the sea mouse got there first.

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26 minutes

大象传媒 World Service Archive

This programme was restored as part of the World Service archive project

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