The science pros at TKOR upgrade their giant vortex cannon for stronger air blasts.

He was a foremost authority on the president, tracing his career in unvarnished accounts from his time as California governor through his years in the White House. By Robert D. McFadden Lou Cannon, ...

A strong blast of Arctic air will drive temperatures sharply lower from the Midwest to the interior Northeast this weekend, bringing the season's coldest weather so far for many, forecasters say.

Archaeologists exploring the Jiankou section of China’s Great Wall discovered a large cannon. The cannon, found among a cache of additional weapons, was potentially cast in the late Ming Dynasty ...

A polar vortex is expected to bring frigid temperatures to the central and eastern United States this weekend. South Carolina will experience a significant temperature drop, with nightly lows reaching ...

Another round of bone-chilling air from the polar vortex could invade the central and northeastern US this weekend and potentially produce the first significant snowstorm of the season for the ...

Add Yahoo as a preferred source to see more of our stories on Google. Ready for some serious cold? The planet's most extreme cold air will be barreling into the central and eastern United States this ...

A polar vortex system is expected to bring two or more cold waves to Florida this week. Temperatures in North Florida could drop into the upper 20s, with a chance of frost or freeze. Central and South ...

Add Yahoo as a preferred source to see more of our stories on Google. A map of the polar vortex that is bringing frigid temperatures to parts of the U.S. (AccuWeather) The first of three rounds of ...

Grab your coats, it's getting chilly. A polar vortex broke, and severe temperatures are set to dominate most of the United States, including the Midwest, in the coming days. The polar vortex will ...