Rob Knight

Microbial Ecologist; Author of "Follow Your Gut"

Emily Cross

Researcher; American Geoscience Institute’s Geoscience Award Winner

Dr. Paula Johnson

President of Wellesley College; Innovator Known for Advancing the Education, Health & Well-Being of Women

Peter Hotez

Dean & President of the National School of Tropical Medicine at Baylor College of Medicine and Sabin Vaccine Institute

Saanya Bhargava

Founder of Remora and Impact Gravitas

Melati Wijsen

Activist, Social Entrepreneur & Founder at Youthtopia

Mountain Mamas in the Circular Economy - Melati Wijsen

Hayley Arceneaux

St. Jude Children's Research Hospital Employee; Bone Cancer Survivor; Youngest American in Space

Gitanjali Rao

Inventor, TIME Magazine's first ever "Kid of the Year" in 2020, Young Scientist Challenge Winner, Recipient of the United States Environmental Protection Agency President’s Environmental Youth Award

Girls & Science Has A Special Guest Speaker This Year: Gitanjali Rao

Alyssa Carson

Youngest Ever Astronaut in Training; Space Travel Enthusiast

Abigail Harrison

Founder of The Mars Generation, STEM Advocate & Internet Personality; Aspiring Astronaut

Anushka Naiknaware

Indian-American Inventor, Scientist & TED Speaker; Youngest Winner of the Google Science Fair (2016)

Kiara Nirghin

Scientist, Innovator & Author; Winner of the 2016 Google Science Fair

Kiara Nirghin on the gender divide in science, technology ...

Olivia Hallisey

Winner of the 2015 Google Science Fair; Invented a New Way to Test for the Ebola Virus

Sustainability Solutions Science Fair - Olivia Hallisey

Shree Bose

Grand Prize Winner of the First Google Global Science Fair & Cancer Researcher

Dr. Francis Collins

Director of the National Human Genome Research Institute

Alex Azar

Secretary of the U.S. Department of Health and Human Services; Former President of Lilly USA, LLC

Amy Abernethy

President of the Clinical Research Business at Verily

Scott Aaronson

David J. Bruton Centennial Professor of Computer Science & Director of the Quantum Information at The University of Texas

Quantum Computing Since Democritus

Sweta Chakraborty

President of US Operations for We Don't Have Time; Behavioral Scientist, Policy Advisor & Author

Pharmaceutical and Medical Device Safety

Danielle Krettek

Founder & Principal of Google's Empathy Lab