Here's what we know so far.

Dozens of drivers were stuck on two California highways for hours after a tractor-trailer crashed, overturned and caught on fire. Watch the video to learn why this crash created a chemical and traffic nightmare.

Two years ago in the Pacific kingdom of Tonga, the Hunga Tonga volcano erupted underwater. The explosion was a record-breaker, causing a tsunami that triggered warnings across the entire Pacific basin. Now a new study is challenging the eruption’s impact on the record-breaking heat we’ve experienced in the last couple of years. For more information, visit phys.org

For those in New England, make sure to pack your umbrellas to start the week. A coastal system will bring rain, storms, and slightly cooler temperatures on Monday. Here’s the forecast.