Earthcare cloud mission launches to resolve climate unknowns

5 minutes agoJonathan Amos,Science correspondent, @BBCAmosEsaArtwork: It's taken fully 20 years to get Earthcare into space A sophisticated joint European-Japanese satellite has launched to measure how clouds influence the climate.Some low-level clouds are known to cool the planet, others at high altitude will act as a blanket.The Earthcare mission will use a laser and a radar to probe the atmosphere to see…