From France's Nicolas Sarkozy to America's President-elect Barack Obama world leaders are pointing to investment in emerging green technologies and research as the way ahead in boosting the world's sagging economy and creating new jobs, suggesting programs equivalent to U.S. President Franklin Roosevelt's New Deal of the 1930s. But as the call goes out for green innovation and climate change technologies, there is an important lesson to learn from an ammonia synthesis patent which marks its 100th anniversary this year: some inventions may be a double-edged sword.
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