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Currently you are able to watch "Mission Critical" streaming on The Roku Channel, Tubi TV for free with ads.
When National Geographic photographers go on assignment, it's not just a job-it's a mission. Covering stories that are as urgent as they are timeless, they travel to every corner of the globe to show us what we need to know now-to save iconic species from extinction, protect ourselves, and make way for a better, more sustainable planet. This time, they're taking you along for the ride.