环保节水一厢情愿的政策难奏效_时事

环保节水一厢情愿的政策难奏效

Three years ago, the University of Vermont inBurlington began to experiment with a few nudgestowards a healthy, sustainable lifestyle. First, in2012, campus outlets and the company operatingthe vending machines were required to make sure that at least 30 per cent of the drinks onoffer were wholesome stuff such as vegetable juice, low-fat milk and water. A few monthslater, selling bottled water on campus was banned outright. The aim, pushed hard by studentcampaigners, was to encourage students to fill reusable bottles with tap water instead.

三年前，位于伯灵顿的佛蒙特大学(University of Vermont)开始尝试一些推进健康、可持续生活方式的“轻推(nudge)举措。首先，在2012年，校园商店和经营自动售货机的公司被要求确保它们提供的饮料中有至少30%是健康饮品，比如蔬菜汁、低脂牛奶和水。几个月后，校园里彻底禁售瓶装水。这一举动的目标是鼓励学生用自来水灌入可重复使用的饮水瓶、以代替瓶装水，学生倡导者也努力推动这一目标的实现。

So, how did the Vermont experiment go? A study by Elizabeth Berman and Rachel Johnson (ofthe University’s own Department of Nutrition and Food Sciences) was recently published in theAmerican Journal of Public Health. The researchers found that “per capita shipments of bottles,calories, sugars and added sugars increased significantly when bottled water was removed...Asbottled water sales dropped to zero, sales of sugar-free beverages and sugar-sweetenedbeverages increased.