Worldwide, too little iodine in the diet is the most common cause of hypothyroidism. In countries with enough iodine in the diet, the most common cause of hypothyroidism is the autoimmune condition Hashimoto's thyroiditis.
The pronghorn is the second fastest land mammal in the world, after the cheetah. It can attain speeds of over 53 miles (86 kilometers) per hour. Size relative to a 6-ft (2-m) man: Fleet-footed pronghorns are among the speediest animals in North America. They can run at more than 53 miles (86 kilometers) an hour, leaving pursuing coyotes and bobcats in the dust.
In recent years, ultra-fast Lamborghini models include the 2006 MurciÃ©lago LP640 with a top speed of 211 mph, the 2011 Aventador LP700-4 with a top speed of 217 mph, and the 2000 Diablo Coatl, a reworking of the Lamborghini Diablo for the Latin American market, which could reach top speeds of 239 mph.