环境科学家佩·德雷塞尔认为，用未经处理的人类粪便来种植粮食，这种做法的社会和经济效益超过了健康风险。
Pay Drechsel, an environmental scientist, argues that the social and economic benefits of using untreated human waste to grow food outweigh the health risks.
古德尔认为那些一边用动物的大脑来研究人脑而同时又否认动物有感情的科学家是“不合乎逻辑的”。
Goodall says scientists who use animals to study the human brain, then deny that animals have feelings, are "illogical."
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