The climate crisis continued to be at the forefront of the mainstream consciousness this year, and Greta Thunberg became one of the faces of the movement. The 17-year-old Swedish climate activist — who kicked off a climate-change movement after skipping school in August 2018 — left her home country to travel the world and spread her climate activism message, inspiring an entire generation in the process.

In 2019, we watched as Thunberg spoke at the UN Climate Action Summit in New York City in September, was nominated for a Nobel Peace Prize in March, and was named Time's Person of the Year in December.

So if 2018 was the year Thunberg started a movement, and 2019 was the year she took it global, then 2020 is when we'll get a closer look at the inner workings of her activism, straight from the source. On 17 Sept., the first trailer for Thunberg's upcoming documentary, I Am Greta, was released with the announcement that the film is coming to UK cinemas next month.

The Hulu documentary is produced by Cecilia Nessen and Fredrik Heinig, with B-Reel Films, and is directed by Nathan Grossman. The team has been following Thunberg from the beginning, since the early days of her school strike, right up when Time revealed her to be its Person of the Year. The documentary will not only serve as a fascinating look behind the curtain of Thunberg's activism but will no doubt also help continuing to spread her important message.

I Am Greta made its debut at the Venice Film Festival earlier this month, and will be screening in UK cinemas on 16 Oct with a special screening and exclusive Q&A on 18 Oct. Watch the full trailer above and buy tickets in advance here.