约翰霍普金斯大学城市环境健康中心的副主任迈克尔.查施博士称，塑料本身不含毒素，太阳光线也不能使塑料分解出毒素。

Plastics do not contain dioxins, and the sun's rays are not strong enough to create them, says Michael Trush, PhD, deputy director of the Johns Hopkins Center for Urban Environmental Health.

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一拳大师迈克·泰森纪录片，霍利菲尔德和伯纳德·霍普金斯对他们的生活和的环。

A documentary on boxing greats Mike Tyson, Evander Holyfield and Bernard Hopkins examines their lives in and out of the ring.

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