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Footage of real tornadoes without any coherent story.

The mother of the most infamous school shooter in history tells what she wishes she'd done differently. Discussions around stopping mass shootings are usually bifurcated by politics: Gun control on the left and Mental health on the right. But the issues are interconnected and inform each other. Most gun deaths are suicide. This moving story of a mother coming to terms with her own son gives us all a unique chance to step back and then step forward.

The Great Year is a compelling documentary that explores the possibility that the fall of ancient civilizations around the globe, and the rise of modern civilization, might be related to our Sun's motion around a companion star. The film examines evidence that ancient civilizations may have known of this celestial cycle and that our Sun may indeed display the characteristics of binary motion.

Dedicated exclusively to the performance of contemporary classical music, Contempo is one of the oldest and most successful professional new music groups. This film is a feature-length cinematic account of Contempo at its transitional time of its 50th-year history, in late 2014 to 2015. Through interviews of the past and present participants, concerts and archives, the film explores Contempo's history and future in the context of the history and future of the arts in Chicago.

A documentary about the history of African American race films during the Golden Age of Hollywood.

In an isolated valley of Argentina fossil hunters follow the deadly trail of a dinosaur, a killer from the prehistoric past.

The Nile - Egypt's lifeline. It transforms parched soils into productive farmland. Houses and settlements are built from its mud. Without the Nile, Egypt would be nothing but desert.

The Sierra Nevada has one of the most beautiful and dramatic landscapes in America. It is a land of extremes - from mountain peaks to scorching deserts - and the ultimate destination for thrill seekers. The Sierra Nevada is also a graveyard for over 2,000 crashed planes, including that of billionaire adventurer Steve Fossett. This is over 20 times more than the number believed to have been lost in the Bermuda Triangle. UFO expert Jeff Gonzales believes that the answer lies in the notorious Area 51. Rumours of captured alien technology have persisted since the Roswell incident in 1947. Gonzales believes that the testing of advanced alien technology is interfering with earthbound navigation systems. Aviation archaeologist Peter Merlin also thinks that Area 51 is responsible, but that the strange goings-on in the Sierra Nevada have nothing to do with alien technology. Standing over the wreckage of a military plane, he explains that Area 51 is a testing ground for advanced military aircraft - and prototypes are always more prone to accidents. That does not, however, explain the high number of civilian crashes. Researcher Kelly Redmond at the Desert Research Institute believes that the geology of the Sierra Nevada holds the key. The mountains rise to over 14,500 feet but plummet rapidly to the depths of Death Valley, 285 feet below sea level. Redmond believes that the contrast between such dramatic altitudes creates freak storms, but abnormal weather cannot explain the plane crashes that have occurred during perfect flying conditions. Zach Tolby at the National Weather Service in Reno believes that he has found the final piece of the jigsaw. He claims that the topography and weather conditions of the Sierra Nevada combine to create unpredictable downdrafts capable of causing aircraft to fall out of the sky.