"Vanishing Subs: The Mystery Beneath Antarctica's Doomsday Glacier"

Sweden’s University of Gothenburg's robotic submersible, "Ran," went missing during its exploration beneath Antarctica's "Doomsday Glacier," prompting a recovery effort. The 23-foot-long vehicle, equipped with advanced technology, was conducting missions to document the area under the ice, but failed to resurface after its last planned dive. The research team suspects it encountered trouble under the ice, and efforts to locate it have been unsuccessful, likening the search to finding a needle in a haystack without knowing the haystack's location.