Paul Kagame sponsored the program ACES to create low-emission versions of this technology. A 2012 biography subtitled for the “Adventures of a Curious Man” examines how a taxidermist-turned-businessman who pioneered this technology filed hundreds of patents for items like a recoil-less whale harpoon. African-American inventor Frederick (-5[1])McKinley Jones developed a shockproof version of this technology, whose other pioneers included Polly Pennington. So-called “Houses” (-5[1])that used this technology were crucial to Frederic Tudor’s international trade enterprise. (10[2]-5[1])Gustavus Swift’s namesake company (-5[1])relied (10[1])on train cars (10[3])equipped with (10[1])this technology (10[4])known (10[1])as (10[2])“reefers.” (10[4])Ammonia (10[1])was phased (10[1])out for use in this technology in favor of CFCs like freon (“FREE-on”). For 10 points, name this technology used for food preservation. (10[1])■END■ (10[3])