In humans, heavy metal poisoning is generally treated by the administration of chelating agents. Some elements otherwise regarded as toxic heavy metals are essential, in small quantities, for human health.
Bolivian movie marathon 2011 â Photo: Giannina Machicado/La Prensa. Finally, this morning the longest movie marathon in history ended after 200 hours, 30 minutes and 50 seconds. The last two people left in the race, Ronald Cuellar (Santa Cruz) and Huber Felipez (Cochabamba), agreed to call it a draw and split the $10,000 prize.
The marathon is a long-distance running event with an official distance of 42.195 kilometres (26.21875 miles, or 26 miles and 385 yards), usually run as a road race.he Boston Marathon is the world's oldest annual marathon, inspired by the success of the 1896 Olympic marathon and held every year since 1897 to celebrate Patriots Day, a holiday marking the beginning of the American Revolution, thereby purposely linking Athenian and American struggle for democracy.