By Stephen Beech

Air travel will become more of a bumpy ride - due to global warming, warns new research.

The atmosphere will become more turbulent in future decades as climate change makes the air less stable, say scientists.

The new University of Reading research built on a previous study that found potentially catastrophic turbulence increased as the world warmed over the past 40 years.

Researchers used 26 of the latest global climate models to study how warming temperatures affect jet streams at typical aircraft cruising altitudes of around 35,000 feet.

The research team explained that jet streams are the fast-moving air currents that flow around the planet at high altitude .

As they change due to climate change, they create stronger wind shear - differences in wind speed at

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