With habitat destruction accelerating and more species being pushed to the edge of extinction, Levitt said spending on programs to preserve the environment should be doubled or tripled.

• 鉴于栖息地的遭破坏程度正在加剧，以及越来越多的物种正濒临绝种，利维特说用于保护环境的费用必须是现在的双倍，乃至三倍。