MAKING THE PAPER

摘要

Few scientists can say that their research project grew up as they did. But when ecologist Christopher Clark joined David Tilman at the University of Minnesota, St Paul, as a graduate student in 2001, Tilman's prairie grassland project to understand the effects of nitrogen deposition had already been running for almost 20 years. "I was 7 years old when Dr Tilman started it," says Clark.