10 year challenge: How science and the world have changed By ISWAR This week, social media users have been sharing photos of themselves from 10 years ago alongside pictures from today and the hashtag #10YearChallenge. That got us thinking about how the world of science has changed in that time. From retreating glaciers on our home planet to the deepest reaches of our solar system, the last decade has seen great advances in our knowledge as well as stark changes in our natural world. Meanwhile, computers have learned to create completely imaginary but photorealistic images. We chose four pairs of images that tell different stories about the last 10 years in science. Columbia Glacier, Alaska The Columbia Glacier is one of the most rapidly changing glaciers in the world. Since 1980, it has been in retreat, as shown in these false-colour images from NASA’s Landsat satellites. Its terminus has moved more than 20 kilometres to the north in the last three decades. Chunks of ice have br
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