Serotonin syndrome is a group of symptoms that may occur following use of certain serotonergic medications or drugs. The degree of symptoms can range from mild to severe. Symptoms include high body temperature, agitation, increased reflexes, tremor, sweating, dilated pupils, and diarrhea. Body temperature can increase to greater than 41.1 Â°C. Complications may include seizures and extensive muscle breakdown. Serotonin syndrome is typically caused by the use of two or more serotonergic ...
Lake Baikal, Russia. So large that it is often mistaken for a sea, Russia's Lake Baikal is the deepest and oldest lake in the world, and the largest freshwater lake by volume. Famous for its crystal clear waters and unique wildlife, the lake is under threat by pollution, poaching and development. Lake Baikal, Russia, at sunset. The lake contains more water than all of the North American Great Lakes combined. It is also the oldest and deepest lake in the world (25 million years and 1,637 meters).
At 1,637 meters (5,371 ft), Lake Baikal constitutes the deepest lake in the world, and the largest freshwater lake in the world by volume, holding approximately 20 percent of the world's total surface fresh water.