Windmills and World Trade

In praise of eliminating tariffs on environmentally friendly products.

The outskirts of Beijing.

Photographer: PETER PARKS/AFP/Getty Images

When the winds of change blow, a Chinese proverb says, some people build walls and others build windmills. Given the tremendous environmental challenges the world faces, it’s not enough just to build windmills. We need to develop a range of innovative environmental technologies, and we need to break down barriers to trading them worldwide.

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