A major heat wave is heading toward Philadelphia. Why it matters: The heat could threaten records across the U.S., and particularly heighten health risks since people are not yet accustomed to the ...

PHILADELPHIA (CBS ... before spiking as heat arrives in force for the work week. Starting Monday, a heat wave will grip the Northeast and Midwest U.S., prompting health warnings from officials ...

In addition to place-based variability, the adverse consequences of high heat are a particular concern for physiologically vulnerable subpopulations, including infants. Philadelphia, PA is a prime ...

A Southern "heat wave" will smash dozens of daily, and even a few monthly records from Colorado and Texas into the Deep South into this weekend. It's just the latest round of record warmth we ...