Abstract: To investigate the breakdown characteristics and polarity effect of multilayer oil-paper composite insulation (OPCI) under dc voltage, experiments are conducted to obtain the positive and ...

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Forecasters are warning that virtually the entire United States is about to be engulfed in a deep freeze, as a distorted polar vortex prepares to unleash Arctic air from the northern Plains to the ...

This is going to be a good year for zero-calorie bubbly drinks. Polar Seltzer’s Summer limited-edition flavors for 2026 are starting to hit store shelves and it looks like a strong group this year. It ...

Climate change is pushing two iconic Antarctic species toward the brink of extinction — the emperor penguin and the Antarctic fur seal, a new assessment finds. The new listings, published Wednesday by ...

The stratospheric polar vortex is collapsing for the season, but its remnants can still bring cold air to the US. The polar vortex dissolves annually as the Arctic warms, reducing the temperature ...

The stratospheric polar vortex, the winter engine that traps Arctic cold high above the North Pole, is entering its seasonal collapse. What’s left is the lower-level polar vortex core, lingering over ...