Zack Martin announced his retirement from the NFL on Thursday, prompting Dallas Cowboys' defensive star Micah Parsons to post a bold message on social media.

Zack Martin's impact on the Dallas Cowboys went beyond his incredible performance on the field, evidenced in the outpour of appreciation from his teammates including Micah Parsons.

Michel Martin is a host of NPR's Morning Edition. Previously, she was the weekend host of All Things Considered and host of the Consider This Saturday podcast. Outside the studio, she has also hosted ...