New sensor detects low air humidity

Measuring air humidity is important in many areas. However, conventional sensors in hygrometers have so far not been able to determine a very low water vapor content. Physicists at the University of Duisburg-Essen (UDE) and ...

The long-term effect of wildfires in Canada: Q and A

The most harmful air pollutant worldwide is fine particular matter. In Canada, the biggest natural source of this pollutant is wildfires. Winds can spread wildfire smoke over a wide area, affecting areas hundreds of kilometers ...

High heat: Spain clocks prelim record of 47.2 C (116.96 F)

Spain set a new provisional heat record of 47.2 degrees Celsius (116.96 Fahrenheit) on Saturday as Southern Europe sweltered under a relentless summer sun. Italy put 16 cities on red alert for health risks and Portugal warned ...

Northwest sizzles as heat wave hits many parts of US

Volunteers and county employees set up cots and stacked hundreds of bottles of water in an air-conditioned cooling center in a vacant building in Portland, Oregon, one of many such places being set up as the Northwest sees ...

Heat wave hits Northwest, sending people to cooling centers

People headed to cooling centers Wednesday as the Pacific Northwest began sweltering under another major, multiday heat wave just over a month after record-shattering hot weather killed hundreds of the region's most vulnerable ...

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