Discover the career path of Sophia Kianni, from the first major opportunity to industry-changing achievements.
Sophia Kianni is an Iranian-American social entrepreneur and climate activist. She co-founded Phia, a digital fashion app. She also founded Climate Cardinals, the largest youth-led climate nonprofit globally, translating climate information into numerous languages. She has advised the EPA's National Youth Advisory Council and the United Nations, making her the youngest UN advisor in US history. Kianni is a prominent voice in the youth climate movement.
Sophia Kianni and Phoebe Gates were recognized in the TIME100 Next 2025 list. They also discussed their consumer AI shopping app, Phia, at Disrupt 2025, highlighting its innovative features and potential impact.
In November 2019, Sophia Kianni, at age 17, participated in a protest organized by Extinction Rebellion in Washington, D.C., demanding a conversation with Nancy Pelosi about climate change. She gave a speech, did press interviews, and continued a hunger strike remotely. She also wrote about her participation in Teen Vogue.
In 2019, Kianni wrote an article for Teen Vogue about the Pelosi office hunger strike.
In 2019, Sophia Kianni joined Greta Thunberg's Fridays for Future and took time off school to support climate action. She helped organize the 2019 Black Friday climate strike and became a national strategist for Fridays for Future and national partnerships coordinator for Zero Hour.
In May 2020, Climate Cardinals was launched, attracting 1100 volunteers on its first day and partnering with Radio Javan to share translations with Iranians.
In July 2020, Sophia Kianni was appointed by United Nations Secretary-General António Guterres to his Youth Advisory Group on Climate Change. As the youngest member of the group, she represented the United States, the Middle East, and Iran.
By August 2020, Climate Cardinals had over 5,000 volunteers, with an average age of 16.
By December 2020, Climate Cardinals had 8,000 volunteers and partnerships with UNICEF and Translators Without Borders, reaching over 350,000 people with over 750,000 translated words of climate information.
In 2020, Kianni acted as an XR DC spokesperson.
In 2020, Kianni wrote two articles about the effects of the coronavirus, one for Cosmopolitan Middle East about its effects on Nowruz, and another for Refinery29 about its impact on her daily schedule as a climate activist.
In 2020, Sophia Kianni founded Climate Cardinals, a youth-led non-profit organization aimed at providing climate change information in every language, inspired by her experience translating articles for her Iranian relatives.
In 2020, due to the COVID-19 pandemic, Sophia Kianni shifted to remote activism, continuing her activism remotely with her talk at Michigan Technological University. She accelerated the development of Climate Cardinals, a website to translate climate change information into different languages.
In September 2021, Sophia Kianni co-chaired the Youth4Climate event in Milan. Climate Cardinals translated the Youth4Climate manifesto into the 6 official languages of the United Nations.
In November 2021, Sophia Kianni spoke at several panels at COP26 in Glasgow and met with António Guterres, Secretary-General of the United Nations.
In 2021, Kianni began hosting a podcast for The New Fashion Initiative, interviewing experts involved in the fashion industry about addressing climate change.
In October 2022, Sophia Kianni was featured in Vogue Arabia for representing the UN and speaking at COP27 in Sharm el-Sheikh, Egypt.
In 2022, Kianni spoke at several conferences, including Web Summit and the 2022 Arch Summit.
In 2022, Kianni wrote an article for The Washington Post about how she lives sustainably in college.
In 2023, Climate Cardinals partnered with the Google Cloud AI-powered Translation Hub to translate 800,000 words into 40 languages in three months.
In 2023, Kianni partnered with Greta Thunberg and Vanessa Nakate to write a CNN editorial criticizing US President Joe Biden's endorsement of the Alaskan oil drilling Willow project.
In 2023, Sophia Kianni joined the board of directors of the Museum for the United Nations - UN Live, and was appointed to the Environmental Protection Agency National Environmental Youth Advisory Council (NEYAC).
In April 2024, Google.org donated $400,000 to Climate Cardinals, marking one of their initial funding rounds for a youth-led climate organization.
In August 2024, Climate Cardinals hired Hikaru Wakeel Hayakawa, a founding director of Climate Cardinals, as its first full-time Executive Director.
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