在十个领域中 — — 包括健康、教育、战争、性别、空气污染、气候变化和生物多样性 — — 经济学家回答同一个问题：自1900至2013年的每一年，这一问题的相对成本是多少？ 并且对2014—2050年的这一数字做出预测。
Across ten areas – including health, education, war, gender, air pollution, climate change, and biodiversity – the economists all answered the same question: What was the relative cost of this problem in every year since 1900, all the way to 2013, with predictions to 2050.