Alisyn Camerota takes a look back at the NBC sitcom "Friends" which debuted in September 1994.

On the 50th anniversary of Woodstock, correspondent Bill Weir takes a trip across America, speaking with legendary musicians who performed at Woodstock and examining the historic event's impact on future generations.

CNN's Poppy Harlow examines Amazon's journey from online bookstore to e-commerce giant and beyond.

CNN chief medical correspondent Dr. Sanjay Gupta goes on a nationwide investigation to look at the real-life impact of dozens of deregulations at the EPA and what it means for the health of American families.

Fareed Zakaria traces the roots of the current white supremacy crisis in the United States and reports on how the number of hate groups has soared to a record number and hate crimes are up by double digits.

From small towns in the Midwest to the President of the United States, Ed Lavandera travels across America uncovering the country's deep and contingent need for undocumented workers.

Kate Bennett profiles first lady Melania Trump, talking to those who know her best.

Erin Burnett takes a look at how President Trump and his businesses make money as he battles to keep his taxes and other financial documents away from scrutiny.

Alisyn Camerota looks at the lives of Prince Harry and Meghan, the Duke and Duchess of Sussex, as they welcome their newborn son into the world.

Examining impeachment with the backdrop of the Trump presidency and the Mueller report; Fareed Zakaria traces the history of impeachment and its implications.

Fareed Zakaria explores a country where women are property and music and movies are evil, until a new crown prince brings unimaginable freedoms, but there is a dark side.

Fareed Zakaria addresses what he sees as the real reasons for North Korean leader Kim Jong Un's sudden transformation; stories of Kim Jong Un's father and grandfather; how the fearsome North Korean propaganda machine was developed.

Laurie Segall explores how Facebook has changed over the past 15 years, and what may be in store for the future of the social network giant.

Randi Kaye looks at the history of the storied White House Briefing Room; he discusses the impact it has on coverage of the Trump administration as well as what it could mean for media coverage of future U.S. presidents.

Inside the life of Mexican drug lord Joaquín "El Chapo" Guzmán whose road to riches is littered with drugs, bodies and jailhouse escapes; Guzmán has been found guilty in a narcotics smuggling trial and will spend the rest of his life behind bars.

An in-depth look at the tragic and gruesome fraternity death of 19-year-old Penn State University student Tim Piazza; his murder leads to one of the largest criminal indictments in history against a fraternity and its members.

All the best and worst moments from the year 2018.

All the best moments and all the worst moments from the year 2017.

A look back at the crimes of John Wayne Gacy, one of America's most notorious serial killers, and the cold case investigation opened 30 years after his conviction to identify eight of his victims.

A collection of compelling, independent stories that go behind-the-scenes of some of the world's most popular online videos; a discussion with the people who were involved and see how their lives were changed forever.

Examining what potential Supreme Court decisions regarding voter rights could mean for upcoming midterm elections and 2020.