Monday, June 28, 2010

Rachel Carson- Responsible for Death of Millions



DDT is a strong synthetic insecticide that was used with great success throughout the first half of the 1900's to prevent malaria and typhus and later used agriculturally. In 1962, biologist Rachel Carson wrote the book Silent Spring to address the precieved health concerns and environmental impacts of DDT and related chemicals. She questioned the logic of releasing such large amounts of chemicals into the environment stating that no one fully understood the human health and environmental consequences that could result. Following the books release, a large population of people were against the use of DDT and a major focus was directed to the use of DDT. This ultimately led to the 1972 ban of DDT use for agricultural use worldwide. However, this ban has proven disadvantages to other countries where malaria and other insect driven diseases are still a major problem. For example, with Rachel Carson's strong influence on the cessation of DDT use, millions of Africans are still dealing with the overwelming rates of Malaria illness and related dealth. One could say that Rachel Carson's book, Silent Spring, has influenced the dealth of millions because of the global decisions that have been made about the use of DDT.

Friday, June 25, 2010

Mercury in the Environment


Dr. Johan Gottgens is a professor and associate chair in the Department of Environmental Sciences at the University of Toledo. His research interests include: pulse stability in wetlands, human impacts on rivers and streams, and paleolimnological approaches to restoration.
Johan.Gottgens@utoledo.edu
Dr. William Fitzgerald is a Professor in the Department of Marine Sciences at the University of Connecticut.




Dr. Marc Lucotte is a Professor in the Institute of Environmental Sciences at the University of Quebec at Montreal.



Fish Mercury Concentration Ranges