My Take
Those who say this is a biased source are sorely misguided. I have students who identify as very conservative who come in daily asking if we are going to watch it. Yes, CNN is a left-leaning source. But Carl and his team do a great job of staying down the middle and just providing the facts. Students stay engaged due to the variety of segments they have and the number of topics covered...and Carl's puns at the end help too! I highly recommend for any classroom. Students need to be more aware of what is going on in the world. This helps them become knowledgeable citizens.
How I Use It
I have used this almost daily for five years now. I show it in my Social Studies classes (which have ranged from 7th graders to seniors), and I pick a focus question for them to answer related to that day's episode. They have to answer the focus question, list one new thing they learn, and provide a location mentioned in the episode. I do this just in a Google Form. It works because it keeps them focused and doesn't turn the 10 minutes into a break for them.