DDT for fighting malaria

In dealing with malaria, some scientists have suggested that the banned insecticide DDT would help people in malaria-prone areas of the world to fight off mosquitoes carrying the malaria parasites, and that the risk of harm from DDT is worth the benefit to be gained in protecting people from malaria. Others argue that this is simply trading in one major biological hazard for a major chemical hazard—the danger of damage to animal and human health from DDT. Which of those arguments do you agree with and why?

Not in my backyard

Would you oppose having a waste incinerator, a hazardous waste landfill, or a deep-injection well for hazardous waste storage located in or near your community? For each of these possibilities, explain your response. If you are against having these waste-disposal facilities in your community, how do you believe the hazardous wastes generated in your community should be managed?

Use of Coal in China

China relies on coal for two-thirds of its commercial energy supply and 80% of its electricity, partly because the country has a great deal of coal. Yet China’s coal burning has made it the world’s top CO2 emitter and has probably sped up the process of atmospheric warming. Do you think China is justified in using coal intensively, as other countries, including the United States, have done and continue to do? Explain. What are China’s alternatives?