Reading： coal ash的污染很严重，需不需要new，much stricter regulations on handling and storing coal ash. 阅读说不需要：有几个理由： 1，相关的regulation已经存在，要求company to use LINER on the ponds什么的。 2，他怕新的严格的规定，会让人们不敢再买recycled coal ash. 3，increasing cost. 电费会涨十倍，大众会不接受。 Listening：说需要： 1，原本的规定只要求company在新的ponds上用liner，old ones are not required.所以现在old ponds 还是会产生许多coal ash， 会进入地下水，最后污染饮用水。 2，professor举了mercury的例子：在mercury 的问题上也有很严格的regulation, 但是人们依然在买recycled mercury for over 50 years. 3，电费确实会涨到多少billion，但是平均到人头上，每个人的电费就只涨了1%而已。It is not a big price to pay to have a cleaner environment.
The lecture refutes the view mentioned in the reading with strong supporting evidences presented, aiming to further emphasize that it is quite necessary to impose new and much stricter regulations on handling and storing coal ash. Firstly, from the perspective of current regulation, the professor states his doubt, because according to the lecture, the regulation only applies to the new ponds, and the old ones keep producing coal ash, which goes into underground water and pollutes the environment. Moreover, judging from sale of recycled coal ash, the professor holds a different view, as the lecture further illustrates that mercury, over which the government has conducted strict rules, has won market share over the past 50 years. Last but not least, on the point of increasing cost, the professor never fails to express his concern, because even though the cost of electricity will increase for billions, people will have to take a one percent increase individually and it is not a big price to pay to have a cleaner environment. (169 words)
