A global summit in London is set to decide on a new definition of energy security.

About 40% of total US energy consumption is used by household and industrial appliances, such as heating and cooling systems, refrigerators and lighting.

Scientists have conflicting theories on why the universe is expanding at an accelerating rate. New measurements from a massive collaboration complicate these ideas.

Funding gaps, regulatory red tape and a shortage of skilled workers are stalling the UK’s mine-water heating projects.

To really compare different electricity sources, you also have to look at the roles they play in keeping the lights on and their drawbacks.

The decades-long struggle to find a permanent place to dispose of nuclear waste will continue, probably for many years to come.

Corporate decisions made in boardrooms and through initiatives with nonprofits have created an important kind of private climate governance.

New research finds liquid air energy storage could be the lowest-cost option for ensuring a continuous power supply on a future grid dominated by carbon-free but intermittent sources of electricity.

Underwater waves could also be used to reduce the risks of tsunamis and to improve their early warning systems.

Upending a long-held supposition, MIT researchers find a common catalyst works by cycling between two different forms.