A tiny robot explorer traversed the vast, frigid waters of Antarctica—even diving under the ice at one point. After miraculously surviving all that, the robot brought back souvenirs for scientists.
In 2020, researchers with CSIRO, Australia’s national science agency, deployed an Argo float—a free-floating, robotic instrument collecting ocean data—near Totten Glacier in East Antarctica. To their surprise and disappointment, fickle Antarctic tides sent the float farther south,…

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