Costs aside,you'll find a lot of basic skepticism at the Farm Bureau and among farmers like Gwen Pitt that human pollution is responsible for climate change.

VOA: standard.2009.12.12

The next slide shows the farm, same farm and its surroundings in 1998, so you can see that a lot has happened here.

接下来这张幻灯片展示的,是1998年的这个农场的周边,你可以看到发生了很大的变化

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选