Explorers working in extreme cold often burn more energy than they can eat.

VOA: special.2010.02.24

I think most and you are familiar with the Aufbau or the building up principle, you probably have seen it quite a bit in high school, and this is the idea that we're filling up our energy states, again, which depend on both n and l, one electron at a time starting with that lowest energy and then working our way up into higher and higher orbitals.

我认为你们大多数熟悉奥弗堡,或者构建原理，你们可能,在高中见过它，又一次,这是我们填充能级的观点，与n和l有关，一个电子每次从,最低的能级开始,然后以我们的方式上升到,更高更高的轨道。

麻省理工公开课 - 化学原理课程节选

Ghana's Energy Commission has been working on a biofuels policy since 2005.

VOA: standard.2009.08.23

What about all those bureaucrats at the Department of Energy working on renewable energy and energy conservation?

FORBES: Tax My Carbon

Launched in 1991, the Energy Foundation today is the largest philanthropic funder of nonprofits working on energy efficiency and renewable energy sources.

FORBES: How To Get A Jumpstart On Your Philanthropy

Tidal Energy Ltd is working with renewable energy company Eco2 Ltd which has developed projects in biomass, wind and landfill gas.

BBC: Pembrokeshire tidal energy scheme in ?1.6m EU boost