Dog mushing is the official state sport of Alaska, having been officially adopted in 1972. Rooted in the region's history as a primary mode of transportation, it remains a defining part of Alaskan culture and features legendary 1,000-mile endurance events like the Iditarod.

Victoria Woodhull was the first woman to run for president of the United States, launching her groundbreaking campaign in 1872.  She was nominated by the Equal Rights Party to run against incumbent President Ulysses S. Grant.  Her run occurred nearly 50 years before the ratification of the 19th Amendment guaranteed women the right to vote, and she was technically younger than the constitutionally mandated age of 35 required to serve as president.

Mach speed is a measurement of an object's speed relative to the local speed of sound in the surrounding medium (like air). Named after physicist Ernst Mach, it is expressed as a ratio: