Liang Qichao's theory of neo-historiography was influenced by varied Occidental academic culture, one of which is geographical environmental theory.

梁启超的“新史学”理论受到多种西方学术文化的影响，地理环境论是其中的一个重要方面。

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Chaos theory was developed by scientists, trying to explain the movement of the planets and the changes in environmental conditions.

混沌理论是由科学家提出的，试图解释行星的运动和环境条件的变化。

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The reigning theory is the same as it is for so many syndromes with no known cause: some people are born with genes that make them highly vulnerable to environmental stimuli.

主流理论的解释跟所有不明原因的综合症一样：“有些人天生的基因使他们难以抵御环境刺激。”

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Studies support the theory that there are several causes, instead of a single environmental cause or genetic problem.

VOA: special.2009.01.06

Darwin's theory - of random mutation followed by natural selection according to environmental suitability - changed science, changed the world.

BBC: Part Three - France and the World

Some consumer and environmental movements have flourished in rich countries, even though Olson's theory suggests that firms and polluters should have a strong organisational advantage over consumers and inhalers of dirty air.

ECONOMIST: POLITICS BRIEF