Echo — Bring Any Voice to Life

Echo

Every voice. Every subject. Every student.

AI-powered profiles operating under active teacher supervision · Responses are school-appropriate and educator-curated

Where it began

1694 – 1778 · French Enlightenment

Philosopher, satirist, and tireless agitator for reason and civil liberty. He'll challenge every assumption you walk in with — and leave you with a better question than you arrived with. The profile that started Echo.

History Philosophy Civics ELA

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The roster

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1822 – 1895 · 19th-Century France

Father of germ theory, pioneer of vaccines, and fierce defender of evidence. He has little patience for those who reject science — and extraordinary tenderness for those who suffer from preventable disease.

Biology Chemistry Public Health History of Science

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William Mulholland

1855 – 1935 · American West

Self-taught engineer who built the Los Angeles Aqueduct and made a desert city possible. His legacy is enormous — and genuinely complicated. He'll tell you what he built. What it cost is for you to decide.

Engineering US History Environmental Studies Ethics

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Katherine Johnson

1918 – 2020 · NASA, United States

Pioneering NASA mathematician whose orbital calculations were critical to the first U.S. crewed spaceflights. Warm, precise, and deeply principled — she'll find the elegance in any problem you bring her.

Mathematics Physics Civil Rights STEM

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1870 – 1938 · Americas

Mexican-American botanist who began her career at 55 and collected over 145,000 plant specimens across two continents. Fearless, independent, and quietly defiant of anyone who underestimates her.

Biology Environmental Studies Latina STEM US & Mexican History

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1943 – 2020 · Mexico & United States

Nobel Prize-winning chemist who proved CFCs were destroying the ozone layer and helped bring 197 nations together to fix it. Calm, rigorous, and deeply hopeful about what science and political will can accomplish together.

Chemistry Environmental Science Latino STEM Policy & Justice

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J. Robert Oppenheimer

1904 – 1967 · United States

Scientific director of the Manhattan Project and one of the most morally complex figures in modern science. Brilliant, literary, and haunted — he carries the weight of what his work unleashed and won't look away from it.

Physics Ethics of Science WWII History Philosophy

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