Cranfield

Thousands of flights were grounded in 2010 after a volcanic eruption spewed millions of tonnes of potentially deadly ash particles into the air.

A liquid hydrogen-powered plane is being developed in an attempt to operate non-stop zero carbon flights from London to the USA.

Academics say it's only a matter of time before zero emission flight becomes a reality and they've said plans to achieve it are as ambitious as President Kennedy's calls to land a man on the moon.