Energy & Green Tech

Device generates light from the cold night sky

An inexpensive thermoelectric device harnesses the cold of space without active heat input, generating electricity that powers an LED at night, researchers report September 12 in the journal Joule.

Energy & Green Tech

Mining bitcoin uses more energy than Denmark: study

Extracting a dollar's worth of cryptocurrency such as bitcoin from the deep Web consumes three times more energy than digging up a dollar's worth of gold, researchers said Monday.

Energy & Green Tech

What is behind the rising gas prices

The rising price of gas has caused widespread concern across the country over how many consumers will afford to heat their homes this winter. The hike in costs has also seen many providers go under as the costs of supplying ...

Engineering

Fukushima nuclear plant out of space for radioactive water

The utility company operating Fukushima's tsunami-devastated nuclear power plant said Friday it will run out of space to store massive amounts of contaminated water in three years, adding pressure on the government and the ...

Energy & Green Tech

Onboard separation technology set to improve fuel economy

A technology developed by researchers at the U.S. Department of Energy's Pacific Northwest National Laboratory could pave the way for increased fuel economy and lower greenhouse gas emissions as part of an octane-on-demand ...

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