When tech journalist Madhumita Murgia began researching data brokers -- companies that collect and sell individuals' personal data -- she wasn't remotely prepared for the deep, dark rabbit hole she was about to descend into. Online anonymity is dead, your smart TV is spying on you, and private companies know what Star Wars memorabilia you're loo...

In the US, the very same blood test can cost $19 at one clinic and $522 at another clinic just blocks away -- and nobody knows the difference until they get a bill weeks later. Journalist Jeanne Pinder says it doesn't have to be this way. She's built a platform that crowdsources the true costs of medical procedures and makes the data public, rev...

The global fertility rate, or the number of children per woman, has halved over the last 50 years. What will having fewer babies mean for the future of humanity? In this funny, eye-opening talk, journalist (and self-described exhausted dad) Wajahat Ali examines how the current trend could lead to unexpected problems -- and shares why he believes...

Claire Wardle is an expert on user-generated content and verification working to help improve the quality of information online.

Heather Brooke campaigns for freedom of information, requesting one secret document at a time.

Euna Lee strives to be a voice for the voiceless and a window for those with no access to outside information.

Carole Cadwalladr is an investigative journalist and features writer.

Kashmir Hill writes about privacy and technology.

Journalist and commentator John Hockenberry has reported from all over the world in virtually every medium. He's the author of "Moving Violations: War Zones, Wheelchairs and Declarations of Independence."

Journalism is a noble calling and the credibility of the profession is at stake. Today, there is weaponization of information and it is dividing us. Ann Curry passionately shares how people are yearning for journalism they can trust. Her Talk powerfully explains that truth leads to trust, which leads to understanding, understanding leads to hum...

Journalist Steven Petrow writes about manners and civility.

Growing up as a gay teen in Northern Ireland, Lyra McKee had her share of disagreements with the Church and, as a journalist in her 20s, found herself estranged from religious institutions. It wasn't until 2017 and an unexpected conversation about LGBTQ rights in an Orlando mosque that she found herself reckoning with the influence of religion o...

TED Fellow Olga Yurkova is a journalist and cofounder of StopFake.org, an independent Ukrainian organization that trains an international cohort of fact-checkers in an effort to curb propaganda and misinformation in the media.

These investigations into the dark underbelly of society shed light on some of the world’s most pressing issues.

Kathryn Schulz is a staff writer for the New Yorker and is the author of "Being Wrong: Adventures in the Margin of Error."

Things are pretty shocking out there right now -- record-breaking storms, deadly terror attacks, thousands of migrants disappearing beneath the waves and openly supremacist movements rising. Are we responding with the urgency that these overlapping crises demand from us? Journalist and activist Naomi Klein studies how governments use large-scale...

Sometimes, a single decision can change the course of history. Join journalist and author Isabel Wilkerson as she tells the story of the Great Migration, the outpouring of six million African Americans from the Jim Crow South to cities in the North and West between World War I and the 1970s. This was the first time in American history that the l...

American journalist and Havana resident Gail Reed spotlights a Cuban medical school that trains doctors from low-income countries who pledge to serve communities like their own.

You can kick Jorge Ramos out of your press conference (as Donald Trump infamously did in 2015), but you can never silence him. A reporter for more than 30 years, Ramos believes that a journalist's responsibility is to question and challenge those in power. In this compelling talk -- which earned him a standing ovation midway through -- Ramos exp...

As an investigative journalist and self-described "professional troublemaker," George Monbiot uncovers the complicated truths behind the world's most persistent problems.

Stephanie Busari is a journalist and editor at CNN International Digital.

Naomi Klein is a public intellectual, journalist and activist.

(NOTE: Ameenah Gurib-Fakim stepped down as president of Mauritius in March 2018, following accusations that she misused a credit card given to her by a nonprofit. Read "Criticisms & Updates" below for more details.) Ameenah Gurib-Fakim was an academic and entrepreneur before being appointed president of Mauritius -- the first Muslim female h...

Gloria Steinem is an award-winning journalist, writer, political activist and feminist organizer.

Joshua Prager’s journalism unravels historical secrets -- and his own.

Eight reporters who've been arrested, shot at and threatened talk about why they continue to report in dangerous war zones, prisons, protest sites -- because otherwise, these stories will go untold.

Glenn Greenwald is the journalist who has done the most to expose and explain the Edward Snowden files.

High school newspaper editors Neha Madhira and Haley Stack share how they fought back when their critical journalism faced the threat of censorship. Learn more about how their efforts expanded to lobbying for New Voices, a law which would extend First Amendment protections to student journalism, and which has now passed in multiple states.

Gayle King is a co-host of "CBS This Morning” and Editor-at-Large of the award-winning O, the Oprah Magazine.

Adeola Fayehun combines her passion for activism with her training in journalism to tell African stories on YouTube with humor.