Cornfields in the Midwest can have a localized effect on humidity. Here's what to know about this so-called "corn sweat" phenomenon.

These expansive areas of sinking air can push temperatures up to 30 degrees above average during the summer while increasing the threat of heat illnesses.

The heat index, or how it feels with humidity factored in, will rise into the triple digits for millions as the hot dome of high pressure engulfs the central states and eventually spreads eastward.

The chance of a tropical depression forming is low before the disturbance moves inland by this weekend, but it will still produce rainfall and rip current impacts on the northern Gulf Coast.

Watch as a rockslide in China narrowly misses a fuel truck on a winding mountain road in Zhaotong City on Tuesday afternoon. The truck was able to sneak through unharmed just before the deluge of large and heavy rocks covered the roadway. Luckily, there were no injuries, and crews were able to reopen the road the following day.