Multiple sclerosis (MS), also known as disseminated sclerosis or encephalomyelitis disseminata, is a demyelinating disease in which the insulating covers of nerve cells in the brain and spinal cord are damaged.ultiple sclerosis is the most common autoimmune disorder affecting the central nervous system. As of 2008, between 2 and 2.5 million people are affected globally with rates varying widely in different regions of the world and among different populations. In 2013, 20,000 people died from MS, up from 12,000 in 1990.
Calamities of the 20th and 21st centuries. CBC Arts Posted: May 08, 2008 12:44 PM ET Last Updated: Aug 30, 2010 2:17 PM ET. The following is a list of some of the worst natural calamities to strike the world since 1900. The list is by definition arguable. Earthquakes, volcanic eruptions, tsunamis, cyclones, hurricanes and other storms are all clearly natural phenomena. But the picture is less clear for disasters like floods and famine.
The oil spill in the Gulf Of Mexico, resulting from the explosion at a BP offshore drilling rig that tragically left 11 dead, is quickly growing to become the biggest ecological disaster this country has ever experienced. Here are 7 long-term consequences we must expect from this catastrophe. Close.n addition, as tragically seen from the Exxon Valdez disaster, local people can suffer long term personal damage from the devastation of their communities, with the escalated stress on families leading to increases in alcoholism, suicide, violence, and divorce.