writes "Scientists at the University of Leeds tested the effects of wearing heavy medieval armor by monitoring volunteers, who were experienced medieval reenactors, as they walked and ran on treadmills, while wearing accurate replicas of 15th century armor. While the suits of armor weighed between 30 and 50 kg, comparable to the weight of gear carried by modern soldiers, volunteers who carried equivalent amounts of weight in backpacks had an easier time with the weight. Volunteers in armor burned more energy and had difficulty breathing. The scientists speculate that much of the additional effort was due to weight of armor on the legs — leg armor was one of the first things dropped in the shift towards lighter armor in the 16th century.
While it has long been assumed that heavy medieval armor limited mobility, and that this contributed to the outcome of battles, such as the Battle of Agincourt in 1415, this was the first study to quantify the impact of wearing heavy armor."Link to Original Source
writes "According to the Organization for Economic Cooperation and Development, the US has fallen to fifteenth in the ranking of nations with respect to the proportion of citizens with broadband Internet access, from third place ten years ago. While US consumers report satisfaction with their Internet access speeds, they receive less bandwidth at higher prices than consumers in Europe. One possible source of the difference is that most advanced nations require line sharing by ISPs, but the US does not."Link to Original Source