MIT senior Sylas Horowitz kneeled at the edge of a marsh, tinkering with a blue-and-black robot about the size and shape of a shoe box and studded with lights and mini propellers. The robot was a remotely operated vehicle (ROV) — an underwater drone slated to collect water samples from beneath a sheet of Arctic ice. But its pump wasn’t working, and its intake line was clogged with sand and seaweed. “Of course, something must always go wrong,” Horowitz, a mechanical engineering major with minors in energy studies and environment…
