When National Geographic photographer James Balog asked, “How can one take a picture of climate change?” his attention was immediately drawn to ice. Soon he was asked to do a cover story on glaciers that became the most popular and well-read piece in the magazine during the last five years. But for Balog, that story marked the beginning of a much larger and longer-term project that would reach epic proportions.

Emmy and Grammy nominated comedian Tig Notaro returns with a hilarious and sharply observed stand-up special packed with delightfully awkward misunderstandings, health scares made hilarious, and family moments with her wife and children that are simultaneously sidesplitting and heartwarming. With her signature delivery and celebrated gift for storytelling, Tig’s new hour hits all the right notes.

Before forensics, DNA, and CSI we had dollhouses – an unimaginable collection of miniature crime scenes, known as the Nutshell Studies of Unexplained Death. Created in the 1930s and 1940s by a crime-fighting grandmother, Frances Glessner Lee created the Nutshells to help homicide detectives hone their investigative skills. These surreal dollhouses reveal a dystopic and disturbing slice of domestic life with doll corpses representing actual murder victims, or perhaps something that just looks like murder. Despite all the advances in forensics, the Nutshells are still used today to train detectives. Documentary film, Of Dolls and Murder, explores the dioramas, the woman who created them, and their relationship to modern day forensics. From the iconic CSI television show to the Body Farm and criminally minded college students, legendary filmmaker and true crime aficionado, John Waters narrates the tiny world of big time murder.

Filmed over three years on China’s railways, The Iron Ministry traces the vast interiors of a country on the move: flesh and metal, clangs and squeals, light and dark, and language and gesture. Scores of rail journeys come together into one, capturing the thrills and anxieties of social and technological transformation. The Iron Ministry immerses audiences in fleeting relationships and uneasy encounters between humans and machines on what will soon be the world’s largest railway network.

When Will Ferrell’s good friend Harper comes out as a trans woman, they take a road trip to bond and reintroduce Harper to the country as her true self.

Three men travel to the Philippines to search for the love of their lives. But find that their lives are not important to the woman they find.

Experience the iconic rock band’s legacy in the first major documentary to tell their story. Directed with the era’s avant-garde spirit by Todd Haynes, this kaleidoscopic oral history combines exclusive interviews with dazzling archival footage.

Former football player and wrestler Chris Nowinski’s quest to publicize recent findings about the often dire consequences of head concussions sustained by athletes in contact sports — injuries that have previously been considered momentary setbacks and ignored in the name of toughness and dedication to the team.

Jokes and improv take center stage as comedian girl group Celeb Five brainstorms material for a comedy special in this behind-the-scenes mockumentary.

Driven to maintain social order, policing in the United States has exploded in scope and scale over hundreds of years. Now, American policing embodies one word: power.

A look at the life and work of legendary photographer Elsa Dorfman, whose subjects have included such friends as Allen Ginsberg, Bob Dylan, and Jonathan Richman.

“Heroes” tells the story of five legends of motorsport, whose lives are intimately intertwined and interconnected as they all scale the heights of their sport, while contending with profound personal challenges along the way.