heat wave

Unless you replenish fluids, just an hour's hike in the heat or a 30-minute run might be enough to get mildly dehydrated, scientists say.

Off Your Mental Game? You Could Be Mildly Dehydrated

10:20am July 30, 2018

by Allison Aubrey

Dehydration has long been known to slow physical performance. Now there's evidence that too little water can hurt cognitive performance, too, making complex thinking tasks harder.

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The Loviisa nuclear power plant in Finland reduced its electricity output because of warmer seawater.

Hot Weather Spells Trouble For Nuclear Power Plants

4:35pm July 27, 2018

by Rebecca Hersher

Multiple nuclear power facilities in Europe have reduced their electricity production because seawater, which is used to keep the reactors cool, has been warmer than usual.

An view of Washington, D.C. through a thermal camera.

Science

WATCH: Why It's Usually Hotter In A City

10:26pm July 24, 2018

The way we design and inhabit cities is making them retain heat.

Families cooled off at the Place des Arts in Montreal, during the heat wave last week, that killed an estimated 70 people across Quebec.

World News

Estimated 70 Deaths Linked To Canada's Heat Wave

8:41pm July 10, 2018

by Vanessa Romo

Most of the people who died are elderly men and women living alone in apartments with no air conditioning, and many had chronic health conditions.

On Wednesday, a man sits shirtless on a bench along the banks of the Spree River in Berlin to keep cool.

World News

Melting Roads And Runny Roofs: Heat Scorches The Northern Hemisphere

12:28pm July 05, 2018

by Amy Held

Temperature records have been broken around the globe. In North America, tens of millions of residents have been under watches, advisories and warnings.

Warmer temperatures are making canola and possibly other brassica seedpods open too early, reducing crop yields.

What Canola Can Tell Us About Crops And Climate Change

12:01pm February 12, 2018

by Angus Chen

When canola seedpods shatter prematurely, farmers can lose a lot of their crop. Scientists have now figured out how this happens, and it has implications for similar crops facing global warming.

A construction worker climbs onto a roof at sunrise Tuesday to avoid the heat in Phoenix. The temperature there reached 119 degrees, as the Southwest bakes in a heat wave.

National

Summer's Just Begun, But The Southwestern U.S. Is Already Baking

6:44pm June 21, 2017

by Amy Held

Parts of California, Nevada and Arizona are under excessive heat warnings through Sunday night.

Forecasters are predicting extreme heat and a high pressure ridge to create a "heat dome" across a large section of the United States.

'Heat Dome' Causing Excessive Temperatures In Much Of U.S.

1:07pm July 22, 2016

by Rebecca Hersher

It's over 100 degrees Fahrenheit in much of the Midwest, South and East, and the culprit is hot air trapped under an atmospheric pressure lid that heats it up even further.

Consumer advocates took to the streets of Phoenix recently to protest against an Arizona utility's efforts to bill customers using a so-called "demand charge." If approved, Arizona Public Service would be the first utility in the country to place most of

Uber But For Energy: Utility Surge Pricing Threatens Summer Cool

11:37pm July 16, 2016

by Will Stone

Power companies are rushing to keep pace with the changing energy landscape. This transition is especially contentious in the desert Southwest, where energy needs are enormous during the summer.

Construction workers pour concrete at 1 a.m. in Chandler, Ariz.

National

When The Going Gets Hot, Construction Workers Get Nocturnal

8:43am June 29, 2016

by Sarah Ventre

Arizona is getting so hot during the summer days, one construction site in Phoenix has to redefine "nightlife" and pour concrete at 1 a.m.

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