Some hot days feel even worse thanks to high humidity, trapped heat and dew points. Cities are especially vulnerable. ......

Some hot days feel even worse thanks to high humidity, trapped heat and dew points. Cities are especially vulnerable. ......

Some hot days feel even worse thanks to high humidity, trapped heat and dew points. Cities are especially vulnerable.

High heat and humidity are continuing to impact people in the nation’s capital on Monday. According to Environment Canada, the sun will be out...

Record high nighttime temperatures, a dangerously high heat index and intense humidity swept through Chicago from June 21 to 23, marking the city’s...

Record high nighttime temperatures, a dangerously high heat index and intense humidity swept through Chicago from June 21 to 23, marking the city’s...

Chicago is in store for more “dangerously hot and humid conditions” Sunday, with temperatures expected to climb well into the 90s, the National...

Cats love to bathe in sunny windowsills. Dogs love getting outdoor time for play with their owners. But in extreme heat, high temperatures and...

Cats love to bathe in sunny windowsills. Dogs love getting outdoor time for play with their owners. But in extreme heat, high temperatures and...

A new study has uncovered strong evidence that past volcanic eruptions triggered dramatic climate changes that wiped out large parts of marine...