What is, in general, a depressant? It is a psychoactive drug, as it can affect the mood and perception, by acting on the central nervous system. A depressant is the substance that slows down or inhibits the functions of the central nervous system. Well, many of us may think that alcohol is a pure antidepressant, that helps us calm down and relax our nervous system, but, in fact, it is exactly the opposite.... 

The new research performed by American and Canadian scientists claim that Colombus and his men brought Syphilis to Europe. As a basis they take the fact that Europe’s first-known venereal syphilis epidemic occurred during the years immediately following Columbus’s return. Kristin Harper of Emory University in Atlanta used the study of evolutionary relatedness between organisms, to examine... 

The toothbrush is an instrument consisting of a small brush on a handle used to clean teeth through tooth brushing. Toothpaste, often containing fluoride, is commonly added to a toothbrush to aid in cleaning. Brushing teeth, a common activity today, has been around for a long time. The toothbrush as we know it today was not invented until 1938. From around 3000 BC, people used anything from a ‘chew... 

When you see something pleasing, beautiful, or humorous, most people will smile spontaneously. That’s not because you have been taught to respond that way through life experience, either. Babies are actually born with the emotional fabric to smile when feeling pleasurable. There are great a many reasons to smile. First, smiling changes your mood, so next time you are feeling down, try putting... 

Manuel Uribe, 42, of Monterrey, Mexico, reached a peak weight of 1,225lb – 87 stone – after years of unhealthy living, including a diet of pizza and tacos. He was one of the heaviest people in medical history. Unable to look after himself, in January 2006, after five years of isolation, Mr Uribe made an impassioned plea on Mexican national television for help. Uribe drew worldwide attention...