Main message? Each one of us makes a difference every single day we impact the world around us and if we would just think about the consequences of the little choices we make what we eat,wear,buy, how we interact with people,animals, the environment then we start making small changes and that can lead to the huge change that we must have."

VOA: special.2009.11.18

Sometimes that subtle change can lead to a big change in the function of the protein.

有时候,蛋白质在结构上的小小改变,会导致其功能发生巨大变化

耶鲁公开课 - 生物医学工程探索课程节选

Changing the diet of populations is a pretty good idea and it's the kind of thing that could help individuals certainly lead healthier, happier lives, but also could change things like healthcare costs for a whole country, so these are big, big factors.

改变大众的饮食是个很好的想法,它不仅可以让人们过上更健康幸福的生活,还可以改变整个国家的医保费用,所以饮食是个非常非常重要的因素

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

And,he says President Obama needs to take a clear lead on climate change when he attends the summit next week.

VOA: standard.2009.12.09

Scientists warn climate change will lead to rising sea levels, more devastating floods and hurricanes, longer lasting droughts and other extreme weather phenomena.

VOA: standard.2009.08.31

and they did it,". He says reforms undertaken by communist dictatorships never lead to systemic change without an active opposition creating what he calls a "civil society movement."

VOA: standard.2009.11.03