There is no free lunch, but you can watch a normally unfree documentary for free on the usual streaming networks for a little while.
From Hollywood Reporter:
Michael Bloomberg, founder of Bloomberg Philanthropies, says, “Coal affects our lives and planet in important ways, but people often take positions on it without seeing the full picture. So this week, National Geographic is making From the Ashes available for free on a number of platforms. We encourage family and friends to watch the film and join the CrowdRise campaign to support organizations that are helping create new jobs in coal country.”
The film premiered earlier this year at the 2017 Tribeca Film Festival and then had a limited theatrical release in New York and Los Angeles before its global broadcast debut on National Geographic beginning Sunday. National Geographic will continue to roll out the film globally across 171 countries and 45 languages.
Bloomberg Philanthropies also organized a worldwide screening tour of From the Ashes, hosting viewings in several cities including Atlanta, Austin, Baltimore, Chicago, Los Angeles, Miami, Nashville, San Francisco, Vancouver and Washington, as well as stops in Brussels, London, Mexico City and Paris. The film has also been screened at more than 200 colleges and universities nationwide.