8 things you need to know today

Good morning Baltimore! We've got one more day of sweltering 90-degree temperatures before things should start to cool off a little tomorrow and through the weekend. We're also likely due for another thunderstorm this afternoon. Here's the news you need to know this morning. The Covid-19 Delta variant is now spreading rapidly in the U.S. and beyond, and has become the dominant strain responsible for more than 60% of infections in the U.K. The highly transmissible variant, first detected in…