Shrinking the world - could hypersonic air travel bring the world closer?

What if you could fly to any airport in the world in just four hours? That's the promise of Destinus, a company working on a hypersonic plane project. But the Switzerland-based company isn't the only one trying to revive the Concorde; Boom Supersonic also announced some progress on its Overture aircraft at the Paris Air Show.

A British Airways Concorde on display at a museum in Surrey Source: SBS News / Allan Lee

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