Astronauts on the International Space Station have photographed the Amazon River many times, and every picture shows something no map can: a winding brown giant, fed by countless tributaries, cutting through the rainforest like a living artery. Here's what those images reveal about the world's largest river. What You're Looking At From orbit, the Amazon's color stands out … [Read more...] about The Amazon river and its tributaries as seen from the International Space Station