As the fate of millions of undocumented immigrants remains a hot-button issue in the 2016 Presidential campaign, actress America Ferrera heads to Texas, where millions of people live without papers.

Zach Galifianakis travels back to his home state of North Carolina to investigate how it has become a bellwether for how the money of a few has come to dominate America's democracy.

The promise of a middle-class life for those with a high school education withers away as millions of jobs are lost.

Common returns to his hometown of Chicago, a city in turmoil in the aftermath of the police killing of teenager Laquan McDonald.

Rosario Dawson investigates how a government could poison its own citizens; the hidden forces and specific policies unique to Michigan that allowed the crisis to ensue in Flint.

Golden Globe and Peabody Award-winning comic actress and producer Amy Poehler delves into the world of the domestic workers who help keep the California economy afloat.

Legendary TV producer Norman Lear explores the housing divide in New York City and is witness to one of the nation's starkest images of inequality.

Native American actor Martin Sensmeier travels to San Juan County, Utah, to investigate the controversy over the Bears Ears National Monument; while there, he uncovers the decades of struggle for equality by the county's native citizens.

Former Fox News Channel host Gretchen Carlson, who recently made her own personal story public, takes viewers to the halls of Congress to uncover a pervasive culture of sexual harassment held in place for decades by a deeply flawed system.

Jesse Williams visits St. Petersburg, Fla., once famous for its beaches and balmy weather, but now notorious for being the unlikely epicenter of the school-to-prison pipeline and student achievement gap.

Diane Guerrero travels to Houston to witness the growing conflict over sanctuary cities; Nick Offerman travels to eastern Kentucky to investigate the collapse of the coal industry and meets voices calling for a different future.

Jussie Smollett travels to Tennessee to witness the growing movement to bring down Confederate monuments and commemorate the deaths of thousands of African-Americans lynched during decades of racial terror.

Norman Lear continues his investigation into gentrification; Rosario Dawson further investigates the Flint water crisis; Jesse Williams travels to Pinellas County, Florida, to investigate one of the most unequal school systems in the country.

Zach Galifianakis continues his investigation into the political landscape of his home state of North Carolina; Amy Poehler reports on the challenges faced by domestic workers in California; fighting to pass a domestic workers bill of rights.

America Ferrera continues her investigation into the lives of the undocumented living in Texas; Peter Sarsgaard reports on unemployment and the closing of America's factories; Zach Galifianakis investigates the changing political landscape.

Hip-hop artist Common explores disparities in the criminal justice system in his hometown of Chicago; Rosario Dawson uncovers the man-made disaster behind Flint, Michigan's water crisis; Norman Lear investigates gentrification in New York City.

Jesse Williams continues his investigation into the Pinellas County School system; Peter Sarsgaard explores the addiction crisis ravaging an Ohio town; America Ferrera reports on the lives of the undocumented living in the Rio Grande Valley.

Stand-up comics on the verge of breaking out and becoming the next big name offer insights into the motivations behind baring one's soul for a living.

Climate change is one of today's most hotly debated topics, not only in America but around the world. This series features firsthand accounts from people who have been affected by the occurrence, with a team of correspondents from the entertainment and news industries traveling around the world to report on effects of global warming and what people are doing to find solutions for it. Among the stories told are Oscar-winner Matt Damon's reporting on the health impact of heat waves around the globe, Golden Globe-winner Michael C. Hall's traveling to Bangladesh to get a vision of the future, and Emmy-winning journalist Lesley Stahl's heading to Greenland to examine the fate of the Arctic. Actors Don Cheadle, Harrison Ford and Jessica Alba are among the other entertainment icons who contribute reports to the hourlong episodes. The roster of executive producers includes James Cameron, Jerry Weintraub and Arnold Schwarzenegger.

From the outside, families seem like harmonious units in loving homes. But you don't necessarily know what secrets families are hiding from the outside world. This series, narrated by actress Brenda Strong, explores families hiding the most extreme of family secrets: murder. Each episode explores a death in a family, unraveling the motives of the family members, all of whom are potential suspects -- and potential victims. Sibling rivalries, disputes over family businesses and infidelity are some of the factors that lead to the families' ultimate betrayals.

Educator Henry Louis Gates Jr. has hosted several PBS series that examine U.S. history. In "Finding Your Roots," the Harvard professor continues his quest to "get into the DNA of American culture." In each episode, celebrities view ancestral histories, sometimes learn of connections to famous/infamous people, discover secrets, and share the emotional experience with viewers. Analyzing genetic code, DNA diagnosticians trace bloodlines and occasionally debunk long-held beliefs.

Romesh Ranganathan is one of the most popular stand-ups in the UK, and he takes on the task of uprooting his entire family and moving to Los Angeles. Ranganathan's family includes his wife, three kids, his Sri Lankan mother, and his eccentric uncle. Follow the family as it seeks to rebuild life from scratch, with all of the obstacles surrounding an overseas move. Ranganathan also books himself a daring gig in which he needs to sell out a 6,000 seat theater in just three months.