Hastings, a professor in the UC Davis Department of Environmental Science and Policy, is one of the world's top experts in using mathematical models (sets of equations) to understand natural systems.

加州大学戴维斯分校环境科学与政策系教授黑斯廷斯，是世界上利用数学模型(方程组)来理解自然系统的顶级专家之一。

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CCICED, 1997. Study on China's Natural resources pricing. China's environmental science publishing house.

中国自然资源定价研究，中国环境与发展国际合作委员会，1997。

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Environmental capacity is a natural science nomenclature to describe the pollution capacity that accommodated by the environmental stuffs.

环境容量是描述环境要素纳污能力的自然科学表述。

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"Participation with environmental science and natural history has a long history, especially in Britain, long before it was termed 'citizen science', " project leader Dr Helen Roy, an ecologist from the CEH, told BBC News.

BBC: Review highlights role of citizen science projects

When opponents of the production of natural gas through hydraulic fracturing techniques (also known as fracking) present highly speculative environmental claims unsupported by sound science to shut down natural gas fracking, they are merely serving to increase the emissions of a multitude of pollutants and carbon dioxide.

FORBES: New Emissions Data Dampen Global Warming Fears

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