Sophia Kianni

Sophia Kianni

Sophia Kianni is an expert in climate crisis and focuses on how science, technology, & society can help revolutionise climate change.

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Sophia Kianni's Biography

Sophia Kianni is a beacon of inspiration in the global fight against climate change. An Iranian-American social entrepreneur and activist, Kianni studied at Stanford University and is the founder of Climate Cardinals, the world’s largest youth-led climate nonprofit. The organisation boasts 10,000 volunteers across more than 80 countries.

With a deep sense of empathy for the natural world, Kianni became a climate activist at a tender age. She is the youngest United Nations advisor in US history and was most recently appointed to serve on the EPA’s National Youth Advisory Council. With a fervent commitment to environmental advocacy, Kianni has captivated audiences worldwide with her impassioned speeches and unwavering resolve.

Sophia Kianni has a following of over 300,000 across social media platforms and her work has been profiled by The New York Times, CNN, Vogue, Business Insider, BBC, NPR, ELLE, The Guardian, NBC, and even on the front page of The Washington Post. She has authored opinion pieces for outlets such as TIME Magazine, MTV News, Cosmopolitan, and Teen Vogue.

A prolific storyteller, Kianni has spoken at universities across the world including Harvard, Stanford, Columbia, Yale, Oxford, Cambridge, and Princeton. Her authenticity resonates with audiences of all ages and she has addressed policymakers and global organisations with great clarity and passion. Sophia Kianni won the TED global idea competition and her debut TED Talk amassed over 2 million views.

Sophia Kianni has been named VICE Media's youngest Human of the Year, a National Geographic Young Explorer, on Business Insider’s Climate Action 30, among BBC’s 100 Women, and to Forbes 30 under 30.

Some of her speaking topics included but are not limited to:

  • - Climate Justice and Equity 
  • - Intersectionality and Environmentalism
  • - Innovative Solutions to Climate Challenges 
  • - Youth Leadership 


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