The Electric Factory Above Our Heads Thunderstorms often begin to develop early in the day when the sun heats the air near ...

A thunderstorm with cloud to ground lightning rages during the day in China on July 21, 2025. CREDIT: Photo by Liu Wei/Xinhua via Getty Images. Get the Popular Science daily newsletter💡 Breakthroughs ...

After an unseasonably warm day Saturday with high temperatures in the upper 60s with plenty of sunshine, conditions started to change Sunday before a significant drop in temperatures arrives for next ...