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.
The Gardiner Dam on the South Saskatchewan River in Saskatchewan is the largest embankment dam in Canada and one of the largest embankment dams in the world. The largest dam rises 64 metres (209 feet) in height, is almost 5 km (3.1 mi) long and has a width of 1.5 km (0.93 mi) at its base with a volume of 65,000,000 cubic meters. 7.