The world spends nearly $7 trillion a year on energy and its infrastructure; yet our current research and development efforts are not up to meeting the challenge of climate change. There is no single solution, but some measures, like better insulation of buildings, would save rather than cost money.
全世界每年在能源和基础设施上花费近7万亿美元；而我们当前的研究和开发工作还不足以解决气候变化的难题。一劳永逸的解决办法是不存在的，但是有一些措施，例如提高建筑物的隔热性能，可以省钱，而不是花钱。