A novel planar slow wave structure (SWS) for traveling wave tube (TWT) is proposed. The major advantage of the planar architecture is its easy realization with respect to the typical 3-D SWSs. The ...

By Amy Woodyatt, CNN (CNN) — Poised on a surfboard and dwarfed by a tower of water some 10 times her size, fear is one of the first emotions that big wave surfer Laura Crane feels before she ...

The threat of those waves is not baseless: big-wave waterman Mark Foo drowned at California’s Mavericks in 1994, while Hawaii local Todd Chesser died surfing a huge swell on an outer reef off ...

Millions of Americans face dangerous heat waves this week. Here are essential tips to stay cool and recognize signs of heat-related illnesses.

WHDH By Mary Gilbert, CNN Meteorologist (CNN) — A long-lasting extreme heat wave is reaching its dangerous crescendo Tuesday, likely bringing the hottest day in a decade to some major East Coast ...

CNN By Mary Gilbert, CNN Meteorologist (CNN) — A long-lasting extreme heat wave reached its dangerous crescendo Tuesday, bringing the hottest day in a decade to some major East Coast cities and ...

5 things to know for June 25: US-Iran, DOGE firings, NYC mayoral election, Homeland Security, Heat wave By CNN Published June 24, 2025 12:39 PM This video is no longer available ...

By Andrew Freedman, CNN (CNN) — The intensifying and expansive heat wave affecting around 150 million people in the United States from Wisconsin to Washington, DC, bears the hallmarks of human ...

The heat waves we are experiencing now are occurring in 1.2 degrees Celsius (2.16 degrees Fahrenheit) of global warming, with even more severe heat likely in coming decades as global average ...