TEDxPhiladelphia returned in Spring 2018 after a three-year event hiatus to kick off a series of discussion-based salons on topics such as reentry, social entrepreneurship and immigration.

Organizers said then that they also planned to bring back the day-long TEDxPhiladelphia conference, featuring the talks that make up the raison d’être of the TED world. Philly’s last such event was held in 2015, with a theme of “And Justice for All.”

In July, the forthcoming conference’s date and theme were announced: May 15, 2019, and “Unintended Consequences.” Here’s what that means:

“The moment that we recognize the impact of an unintended consequence, the story, formerly hidden, unfolds before us. Ideas that arise from unintended consequences are deeply personal. An unintended consequence forces us to reassess our assumptions and challenge our narratives.”

Yesterday, organizers announced the speakers of the Spring 2019 TEDxPhiladelphia conference, happening at Temple Performing Arts Center. You’ll surely recognize a few names on the list:

• Youngmoo Kim — Director of the Expressive and Creative Interaction Technologies (ExCITe) Center and professor of electrical and computer engineering at Drexel University
• Aïcha Ly — Market and competitive intelligence strategist
• Annalicia Geeter — Design thinking strategist and social impact advocate
• Gabriella A. Nelson — City planner and reproductive justice advocate
• Graham Quinn — Executive director of Philly311
• Jose Benitez — Executive director of Prevention Point Philadelphia
• Keith Green — Director of Philadelphia LandCare at the Pennsylvania Horticultural Society
• Kyle Shenandoah — South Philadelphia community advocate and social innovator
• Meghan Talarowski — Founder and director of Studio Ludo
• Nydia Han — Journalist
• Sara Goldrick-Rab — Founder of the Hope Center for College, Community and Justice 
• Stephanie Sena — Founder and executive director of the Student-Run Emergency Housing Unit of Philadelphia
• Michelle Angela Ortiz — Visual artist

Read their full bios here.

TED also recently released a few videos of talks from the December TEDxPhiladelphiaWomen event, “Showing Up.” Yasmine Mustafa, the cofounder and CEO of wearable safety company ROAR for Good, delivered a talk on the #HandsOffPantsOn movement, which calls for protections against sexual harassment for hospitality workers.