The Bonneville Salt Flats have shrunk by 75% in the last 100 years, and they could vanish entirely by the end of the century, new research has found.⁠ ⁠ The flats — beloved by land speed racers, endurance runners, hobbyist rocket launchers and Instagram photographers — are losing about 1 square kilometer, or around 250 acres, per year, according to a study published this month in the journal Geomorphology. At that rate, the flats could completely disappear sometime between 2072 and 2126.⁠ ⁠ “The