Luckily, underneath the foam and froth of the easily visible surface of things, a great deal is changing in China that requires serious research and hard work for a foreigner to learn.

幸运的是，在这些显而易见的事实的表面之下，正在中国发生的这些改变值得一个外国人认真研究和学习。

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There are all sorts of little foam pieces that keep things arranged and from making noise.

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As New York City officials prepare a report on how to double the city's residential recycling rate, the foam is "one of the things that you have to look at, " Department of Sanitation Deputy Commissioner Ron Gonen said by phone Wednesday.

WSJ: Foam cups, containers eyed amid NYC recycling push

The problem is that some things, such as the polyurethane foam used for the most efficient fridges, cannot be recycled as anything.

BBC: Pile of waste