Lesson 1: Elements and Atoms

Science and Technology in Society

 During World War II, an insecticide called DDT was used to prevent insects from transmitting disease. An unforeseen effect of using DDT was the large decline in raptor populations, such as the peregrine falcon, due to a weakening of their eggshells. DDT was banned in most developed nations in the 1970s and 1980s, and raptor populations are now recovering. This example demonstrates the importance of doing a risk-benefit analysis when considering the use of technology or a change to processes.

Even today, DDT is still used in many developing nations where malaria continues to be a problem. Malaria annually affects millions of people worldwide. Due to this, the benefit of using DDT to prevent malaria and save lives is given a greater priority than the risk posed to the environment and to sensitive bird populations. 

You are encouraged to consider the following important question as you study this unit. 

• What is the nature of science and technology, and what is their relationship?
• How should science-related societal, political, economic, ethical and environmental issues be addressed?