Having conquered world markets and challenged American political and military leadership, China has set its sights on becoming a global powerhouse in a different field: scientific research. It now has more laboratory scientists than any other country, outspends the entire European Union on research and development, and produces more scientific articles than any other nation except the United States. But in its rush to dominance, China has stood out in another, less boastful way. Since 2012, the country has retracted more scientific papers because of faked peer reviews than all other countries and territories put together, according to Retraction Watch, a blog that tracks and seeks to publicize retractions of research papers.