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Researchers share passion for science with youth

Marissa Lithopoulos

Stem cell researcher and PhD student Marissa Lithopoulos has volunteered with the Let’s Talk Science outreach program since 2014. The University of Ottawa chapter of this national program celebrates its 25th anniversary this year. Photo by Zhaoyi Chen.

Marissa Lithopoulos has always had a passion for science.

“My favourite show growing up was ‘Bill Nye the Science Guy.’ I knew I wanted to be just like him one day.”

Lithopoulos began delivering hands-on science activities in classrooms as part of the Let’s Talk Science outreach program in 2014 and has been hooked ever since.

“I started by visiting elementary schools and, to the kids, it’s like you’re a magician,” said the PhD student, who works at The Ottawa Hospital. “You’re making volcanoes and slime in the classroom, and the students are super-excited. They just look at you with a sparkle in their eye like, ‘Wow, you’re a scientist!’”

Lithopoulos is one of 254 active volunteers from the University of Ottawa chapter of Let’s Talk Science, which celebrates its 25th anniversary this month.

From volcanic eruptions, Lithopoulos moved into educating high school students about her own area of expertise: stem cells. She also collaborated with fellow PhD students and stem cell researchers Will Chen, Zhaoyi Chen and Tanya Foley to organize an annual symposium called StemCellTalks for high school students that focuses on stem cell biology, policy, and ethics. Cancer researchers Marie-Ève Wedge and David Cook also organize a similar symposium called Let’s Talk Cancer, in addition to arranging dozens of hands-on tours through The Ottawa Hospital’s cancer labs.

Begun at Western University, the now-national science outreach program was launched at the University of Ottawa in spring 1993 by Dr. Barbara Vanderhyden, a senior scientist at The Ottawa Hospital and distinguished professor at the university. She established the “Let’s Talk Science Outreach program” with the goal of helping students in the science, technology, engineering and mathematics fields improve their communication and teaching skills.

“Not only does the program teach kids about science from trusted university sources, but the hope is that they may appreciate the importance of science in their everyday lives – and it may even inspire them to enter the profession themselves,” said Dr. Vanderhyden.

Let’s Talk Science volunteers from Ottawa have won 24 national awards and recognition in the past decade, and the program itself has earned many national awards for it’s hands-on, interactive and in-person approach.

While stem cells hold a lot of promise, few proven treatments are currently available. Many fraudulent companies exploit the hype by selling treatments that aren’t based on scientific evidence.

“Many researchers, particularly in Canada, are doing amazing things with stem cells, but it’s important to acknowledge that there is some bad science out there in the world,” said Lithopoulos. “I think it’s our responsibility as stem cell experts to educate the public about what stem cells can and can’t do.”

In addition to having fun and learning leadership and event-planning skills, Lithopoulos finds her outreach work humbling. Sometimes students will ask thought-provoking questions that make her see her work in a different light.

“We want to convey to students that science is more about asking the right questions, rather than always having the right answers,” said Lithopoulos. “The goal is to get students to think, not to tell them what to think.”

Learn more about Let’s Talk Science.


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  • Kate Strachen says:

    This is so inspirational, what a super role model Marissa is! ! The LTS outreach program is quite successful; clearly, many future scientists are current volunteers with LTS, willing to give back to their communities. Congratulations Dr. Vanderhyden, and thank you! More evidence that some of our finest scientists are at The Ottawa Hospital! 😀

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