BBC: Earth observation scientists have made a last-minute plea to Gordon Brown to put the UK’s weight behind Europe’s environmental monitoring project, GMES. The 2bn-euro venture will build a full picture of the state of the planet from satellite and ground-based data. But despite the UK’s oft-stated claim to lead the world on climate policy, it has so far been lukewarm on GMES. Three leading scientists have now sent a letter to the PM urging him to back GMES at a critical …