...work and data collected by other prominent glaciologists, Molnia gathered about 10,000 aerial photographs, 500 satellite shots and 100 radar images. The sources of information ranged from spectral images taken from space to rings counted inside...

...top of the saltier seawater for a few years. Wonderfully productive, the gyres look bright chlorophyll-green in satellite shots, Edwards said. Sea creatures and birds converge and feed there. So do salmon - which eventually peel off the gyre...