by Patrice Taddonio

America’s political polarization. Russia’s role in the 2016 election. North Korea’s nuclear program. The Trump presidency.

Throughout 2017, FRONTLINE has explored a wide range of stories about our country and our world.

As the year draws to a close, we’re counting down the 10 FRONTLINE documentaries that have earned the most digital streams so far in 2017 — and collecting them all in one place, for easy viewing.

Every day from now through Dec. 22, we’ll reveal a different documentary on the list — starting with No. 10, and ending with No. 1. We’ll also share related reporting on each topic as we go.

We hope you’ll bookmark this link and check back daily as the countdown unfolds. Click each image to learn more about (and watch) each documentary on the list.