It is a common misconception that aspirin is found in the bark of the willow tree. A related compound called salicin does indeed occur in willow bark, thereby explaining the use of the bark as a...
Almost 40,000 people in the United States developed West Nile virus last year and 1,549 died because of it. Compare that to 1999, the first year the disease was seen in North America, when only 62...