我和我的同事为丹麦哥本哈根共识中心进行的新研究探讨了对这场全球挑战所采取的不同应对方式的有效性，但是以下几个原因表明采取组合拳方式更为有效。
New research that my colleagues and I undertook for the Copenhagen Consensus Center in Denmark explores the effectiveness of different responses to this global challenge, but it strongly supports the portfolio approach for several reasons.