Field emission light source has drawn wide attention for its low power consumption, high brightness, long working-life and non-pollution.

场发射光源具有低功耗、高亮度、长寿命、无污染等优点，近年来成为人们研究的热点。

youdao

Flywheel battery is a novel energy storage device which has many advantages: high specific energy and specific power, volume small, fast charge, long cycle life, non-pollution and so on.

飞轮电池是一种新型储能装置，具有比能量高、比功率大、体积小、充电快、寿命长、无任何废气废料污染等特点。

youdao

Solid acid catalyst can be reused and recycled as well as non-pollution for environment.

所用固体酸催化剂可重复使用，且对环境无污染。

youdao

Nanotech also allows for "green manufacturing"--manufacturing processes that can take place at ordinary temperatures, reducing energy costs, while the use of non-toxic catalysts minimize pollution and bottom-up construction leaves no wasted material behind.

FORBES: Nanotech Vs. The Green Gang

But today's problem of non-point source pollution is more difficult to control.

CNN: Polluted rivers stain Portland's image

Costs not captured include electrical grid upgrade, connectivity of renewables and buffering of their intermittency by rapid cycling of fossil fuel plants as presently practiced in this country, and non-carbon-tax externalities such as pollution and health care costs associated with energy sources, especially for coal.

FORBES: The Naked Cost of Energy -- Stripping Away Financing and Subsidies