As a major heat wave grips the eastern US, here's how to stay safe, and the heat stroke warning signs to watch for

AI Summary

A major heat wave affects much of the central and eastern United States, prompting millions to face heat advisories ahead of the July Fourth holiday. Medical authorities emphasize the importance of recognizing heat stroke warning signs to protect public health.

Millions of Americans are facing heat advisories ahead of the July Fourth holiday as a major heat wave spreads across large parts of the central and eastern United States.