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In the 2010s, when Keith was at Harvard University, he and a colleague, climate scientist Frank Keutsch, proposed lofting high-altitude balloons fitted with airboat propellers that would release between 100 grams to a couple kilos’ worth of mineral dust, like calcium carbonate or sulfuric acid.

Below an airboat transports residents rescued from flood waters due to storm surge in Crystal River.

"Jeremy's a great airboat captain and loves interacting with wildlife & customers."

The groom, meanwhile, swapped the camo gear he wears as an alligator tour guide for Airboat Tours by Arthur for a classic three-piece suit in a dark color.

The airboat’s fan spins to life, and we propel forward, gliding along the murky waters.