Operation Cloud Lab: Secrets of the Skies: The team start their expedition by exploring clouds, which play a vital role in the worlds ecology by transporting water from the oceans to the Earth's land surfaces and generating 1.4 trillion tonnes of rainfall every day. Felicity Aston takes a look at how clouds capture and store liquid water in the skies with an experiment to try and weigh a cloud. Andy Torbet tries to measure the forces that keep clouds afloat by parachuting through the turbulent and potentially dangerous air that is around one. Chris Van Tulleken completes the team's examination of clouds by trying to find out if some clouds are alive and as a consequence are more likely to form rain than others.

Starring:

Andy Torbet, Chris van Tulleken, Felicity Aston, Jim McQuaid, Sarah Beynon

Genre:

Documentary