ExtremeTech: A new letter in the Proceedings of the National Academy of Sciences (PNAS) highlights an exciting new ability in global remote sensing: by using fluorescence data from satellites already in orbit, some scientists now believe they can provide a more accurate look at the level of photosynthetic activity in large vegetated areas. Even better, there`s already a super-powered successor satellite in the works, meaning that this new technique could shortly give scientists a much better understanding of...