Newsela does a multiple things extremely well, the first being leveled readers. Most articles have exile levels that students (or teachers can choose between. Below is an example using everyone's favorite villain/hero, Tom Brady.
I like seeing how the opening paragraph increases in complexity. BUT I really love seeing each opening paragraph morphs into an US Weekly story. Just really good stuff.
This site offers many other bells and whistles such as quizzes, annotating text, and easily creating differentiated material. There's quite a lot to it and many other teachers rave about it. I'd highly suggest checking it out and then spend a little time and figure out how you can incorporate this into your classroom.
Their tagline is spot on: Read Closely. Think Critically. Be Worldly.
Check it out.