Beginning with simple and clear explanations of major concepts of physics, including gravity, electromagnetism, and relativity, this DVD illuminates one of the most revolutionary theories in physics today. The string theory, or superstring theory, proposes that the fundamental ingredients of nature are inconceivably tiny strands of energy, whose different modes of vibration underlie everything that happens in the Universe.

It follows The New York Times bestselling author (How to Be Black), podcaster (How to Citizen with Baratunde), and outdoor enthusiast on his journey to explore the country's diverse landscapes and discover how they shape our outdoor lives. Wherever we live, we share a love for the wild, but in a country as big and diverse as America we have vastly different ways to find and experience nature. From coal miners turned beekeepers in Appalachia to Black...

A documentary profile of New Hampshire naturalist and wildlife rehabilitator Ben Kilham, who tracks and studies the American black bear, hoping to promote understanding of the animals he has come to know and care for.

Ken Burns chronicles the history of a uniquely American art form, rising from the experiences of remarkable people in distinctive regions of the nation. From its roots in ballads, hymns, and the blues to its mainstream popularity, viewers will follow the evolution of country music over the course of the twentieth century as it eventually emerged to become America's music. Features never-before-seen footage and photographs, plus interviews with more...

Plants live secret, unseen lives. They are capable of forming mutually beneficial relationships with animals. But they can also be as aggressive, competitive, and dramatic as any living thing on our planet. Using specialist cameras, this spectacular series allows us to travel beyond the power of the human eye, to look closer at their interconnected world. Each episode introduces a set of plants, reveals the battles they face, and the ingenious ways...

In celebration of the twentieth anniversary of the first Harry Potter book, this documentary visits the real-life magical history behind J.K. Rowling's beloved classics. With footage from the British Library's exhibition and exclusive access to a priceless collection of artefacts, take a tour around the mesmerizing journey creating this global phenomenon. Includes interviews with J.K. Rowling herself as she examines the most exciting items on display....

The four-part series hosted by Henry Louis Gates, Jr., chronicles the vast social networks and organizations created by and for Black people beyond the reach of the "White gaze." The series recounts the establishment of the Prince Hall Masons in 1775 through the formation of all-Black towns and business districts, Historically Black Colleges and Universities, destinations for leisure, and the social media phenomenon of Black Twitter. Professor Gates...

Explores the often-contradictory role played by Black soldiers throughout American history. Established by Congress, the 14th Amendment of 1886 promised citizenship in exchange for enlistment, prompting many African American men to serve.

Examine the visionary work and turbulent life of one of the greatest and most influential American writers: Ernest Hemingway. Intimate and insightful, the series weaves together Hemingway's biography with excerpts from his work. The film penetrates the myth of Hemingway to reveal a deeply troubled and ultimately tragic figure.

This multi-episode documentary series takes viewers on the definitive in-depth journey behind the scenes of one of the greatest landmark franchises of all time: Star Trek. Celebrating the show's 55th anniversary, each episode focuses on a different chapter in the groundbreaking program's history. Interviews with the cast, crew, and experts including one of Leonard Nimoy's final in-depth Trek interviews reveal never-before-heard backstage stories and...