Energy & Green Tech

UN agency: North Europe radiation likely linked to reactor

The U.N. nuclear agency said Friday that slightly elevated levels of radioactivity detected in northern Europe likely were related to a nuclear reactor that was either operating or undergoing maintenance, but it's still unclear ...

Energy & Green Tech

AI's carbon footprint problem

For all the advances enabled by artificial intelligence, from speech recognition to self-driving cars, AI systems consume a lot of power and can generate high volumes of climate-changing carbon emissions.

Energy & Green Tech

Analysts: Fire at Iran nuclear site hit centrifuge facility

A fire and an explosion struck a centrifuge production plant above Iran's underground Natanz nuclear enrichment facility early Thursday, analysts said, one of the most-tightly guarded sites in all of the Islamic Republic ...

Energy & Green Tech

Clean energy revolution may leave disadvantaged communities behind

Historically disadvantaged communities in Los Angeles County are at risk of getting left behind in the transition to lower-carbon energy sources and energy-efficient technologies, according to a new study by the California ...

Energy & Green Tech

Dye-sensitized solar cells that adapt to different light conditions

Solar cells made of semi-transparent photovoltaic (PV) materials typically have a fixed optical transmission, which results in either high transparency or high efficiency, but rarely both. In order to perform optimally when ...

Energy & Green Tech

Coal reaching 'tipping point' vs renewables: analysis

Renewable energy such as wind and solar projects are already cheaper to build than it is to continue operating 40 percent of the world's existing coal fleet, according to analysis released Tuesday.

page 1 from 164