Use BBC.com or the new BBC App to listen to BBC podcasts, Radio 4 and the World Service outside the UK.

Find out how to listen to other BBC stations

Episode details

World Service,28 mins

Available for over a year

Oil plume measured; melting Russian permafrost leads to leaking methane; solving the mysterious nature of light; Nickel allergy explained; muscle weakness in astronauts.

Programme Website
More episodes