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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Second, we investigate how, where, and when science and engineering enter the environmental policy process and how they compete with other, frequently more powerful, policy-shaping forces.

第二、我们研究科学及工程这些所谓专业的意见如何在环境政策的决策过程被纳入考量，以及他们如何与其他通常更有影响力的政策形成力量对抗。

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From basic and environmental sciences to science policy and ethics, UNESCO acts as an advocate for science globally.

UNESCO: UK National Commission for UNESCO :: Science

When Clinton tapped him as his running mate in July 1992, Gore brought some impressive experience to the table, including service in the House and Senate, serious environmental credentials and expertise in science, space policy and emerging communication technologies.

CNN: Vital Stats

Originally from France, Natalie Pettorelli is a trained population ecologist who has developed over the years a broad interest in conservation science and environmental policy.

UNESCO: 2010 UK and Ireland Fellows