The Rt. Hon. Dame Jacinda Ardern

Former Prime Minister of New Zealand

Nicholas Davis

Head of Society and Innovation, Member of the Executive Committee, World Economic Forum Geneva

Julia Michaels

Singer-Songwriter Known for "Issues"

Aamir Khan

Actor, Director & Producer

6lack

Singer & Rapper; Known for "PRBLMS"

A Tribe Called Quest

Influential Hip-hop Group

Charlie Brooker

Emmy Award-Winning Writer, Broadcaster & Satirist; Creator of Netflix's "Black Mirror"

Tristan Harris

Product Philosopher at Google; Co-Founder of the "Time Well Spent" Movement & The Center for Humane Technology

I'm not afraid. You're afraid | Tristan Harris | Nobel Prize Summit ...

Cynthia Erivo

Singer-Songwriter & Grammy & Tony Award-Winning Actress; Known for "The Color Purple," "Wicked" & Portraying Harriet Tubman in "Harriet"; Vice President of the Royal Academy of Dramatic Arts

Yara Shahidi

Award-Winning Actress Known for "Black-ish," Youth Advocate & Voting Activist

Let Curiosity Lead | Yara Shahidi | TED

Jessica Chastain

Golden Globe Award-Winning Actress & Film Producer; Gender & Racial Equality Advocate

Justin Mateen

Co-Founder & CMO, Tinder

Sebastian Vettel

Four-time Formula One Champion

Lena Waithe

Emmy Award-Winning Screenwriter, Producer & Actress

Yuval Noah Harari

Historian, Philosopher & Best-Selling Author of "Sapiens"

Disruption, Democracy & the Global Order – Yuval Noah Harari

A-Ha

Karlie Kloss

Entrepreneur, Model, Philanthropist & Founder of Kode With Klossy

Prince Ea

Spoken Word Artist & Activist

Ashley Graham

Model, Entrepreneur & Body Image Activist

Ruby Rose

Australian Model, DJ, Actress & TV Presenter; Known for "Batwoman" & "Orange is the New Black"