Researchers surprised by penned fish responses to robots

Norway leads the world when it comes to the use of robots in the aquaculture sector. But how do these robots actually impact on the fish? Cyberneticist Eleni Kelasidi is surprised by just how much.

Methane emissions from energy sector rose in 2023: IEA

Planet-heating methane released by the fossil fuel industry rose to near record highs in 2023 despite technology available to curb this pollution at virtually no cost, the International Energy Agency said Wednesday.

Ultrasound can save fish in hydropower rivers

The phenomenon of gas supersaturation occurs when air enters water-filled hydropower inlets and is then exposed to high pressure. When this water is subsequently released into the river below the hydropower plant, it's almost ...

New design improves water decontamination via plasma jet

Plasma is an ionized gas—that is, a gas containing electrons, ions, atoms, molecules, radicals, and photons. It is often called the fourth state of matter, and surprisingly, it permeates everything. Plasmas, which are artificially ...

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