Engine chevrons have become a defining feature of modern aircraft, but do they really pose a problem for performance?

In a significant step toward advancing clean energy technologies, the Technology Development Board (TDB) under the Department of Science and Technology (DST) has extended support to APChemi Private ...

The weather forecast is looking promising for warmer weather as the calendar turns to March. In the East, a dramatic warm-up is in the forecast, and the Climate Prediction Center's outlook for March 6 ...

Q: I bought a Vortex Hair Growth Wand and it quit working. The company’s site lists a U.S. address, but when I asked to return the broken device they gave me a warehouse in China and told me shipping ...

Severe temperatures are expected to dominate most of the country in the coming days, with single-digit temperatures forecast for parts of the Northeast. Overall, temperatures will begin to warm in the ...

Rising Arctic temperatures and melting sea ice could be causing cold air to flow into the Northern Hemisphere. But not all scientists agree. By Eric Niiler The polar vortex is a ribbon of ...

Add Yahoo as a preferred source to see more of our stories on Google. Texas and the South and East will see extremely cold weather and a powerful winter storm with the possibility of snow and ice due ...

With over 170 million Americans facing below-average temperatures, even colder air may be on the horizon thanks to the displacement of the polar vortex that will lock in the feel of winter and park ...

Michigan is experiencing frigid temperatures and heavy snow due to a dip in the jet stream, not the polar vortex. The polar vortex is a large-scale cyclone of cold air that typically stays far north ...

Don't be fooled by the string of uneventful weather — the polar vortex is rebooting and will take another swing, or several, at the greater Philadelphia region, leading to a turbulent weather pattern ...