Welcome to Dr. Chen’s ENV 102 blog site for UWGB students to discuss and comment on subjects and issues that are related to the course contents of ENV 02. These research questions will appear in the exam as bonus questions. There are many advantages for you both in improving grades and in getting best 360 degree learning experiences by visiting the site, taking the challenges, discussing with your friends or faculty on those research issues and questions.
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?
Describe the disease about Tuberculosis and why its diagnosis is important. Who are the scientists that tackled TB Diagnosis Challenge and won a success about this challenge? What did they do?
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?
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?
If you live in the United States, list three important ways in which your life would be different today if actions by U.S. citizens between the 1970s and 1990s had not led to the Clean Air Acts of 1970, 1977, and 1990, because of intense political opposition by the affected industries.
If you were in charge of controlling pollution in a certain lake or stream, explain the strategy you would use for dealing with pollution from
a pipe discharging chemicals from a factory;
a parking lot next to a shopping center;
a farm field; and
the lawns around the homes located next to the stream or lake.
Who is John Todd? What is his approach to treat wastewater?
Why does it matter that excessive withdrawal of water from aquatic systems for human uses can reduce river flows, shrink lakes, dry up wetlands, and deplete aquifers? Explain your reasoning.
Who is Paul Polak? What did he do to help poor farmers?
Pick two renewable energy resources. For each of them, what do you think are the two biggest benefits of using them on a large scale, and what do you think are the two biggest drawbacks? Based on this analysis, do you think we should expand the use of the two energy resources you selected or phase them out? Explain.