An overdose of numbing medications can cause fatal side effects if too much of the medicine is absorbed through your skin or gums and into your blood. This is more likely to occur when using a numbing medicine without the advice of a medical doctor (such as during a cosmetic procedure like laser hair removal).
Largest Beaver Dam Seen From Space. The dam in northern Canada spans 2,800 feet and has likely been under beavers' construction since the mid-1970s. A Canadian ecologist has discovered the world's largest beaver dam in a remote area of northern Alberta, an animal-made structure so large it is visible from space. Researcher Jean Thie said Wednesday he used satellite imagery and Google Earth software to locate the dam, which is about 850 meters (2,800 feet) long on the southern edge of Wood Buffalo National Park.
There are thousands of Dams built on the Rivers to hold the water for many reasons, the size of the Dam creates Huge Man-made lakes the measurement varies from Surface Area, water volume, here the Water Volume (Capacity) is taken to rank the Largest Man-made lakes in the World. Kariba is the largest Man-made Lake in the world located between the countries of Zambia and Zimbabwe, covers about 5,400 sq km with the capacity to hold the water of 180 Cubic Kilometers. All of the Man-made lakes below ranked on the total volume of the water. 10. Lake Oahe.