Forgotten Genius Fridays
Forgotten Genius Friday: The Gas Mask and the Man Who Invented It
Garrett Morgan, the inventor behind the modern gas mask and traffic signal, risked his life in 1916 to save workers trapped in a tunnel explosion beneath Cleveland. Though his invention worked and lives were saved, the media largely erased his name because he was Black. This is the story of a hero history tried to forget.
Last Updated on March 27, 2026 by Daily News Staff
🎥 The Knowledge – Episode: Garrett Morgan
“The man who gave us stoplights also saved lives underground.”
Before Garrett Morgan became known for inventing the three-position traffic signal, he was already changing the world—one breath at a time.
In 1912, Morgan designed a safety hood to protect firefighters and miners from the deadly smoke and toxic fumes they faced on the job. This early version of the gas mask featured breathing tubes and a wet sponge to filter air—simple, yet revolutionary.
But the true test came in 1916, when a natural gas explosion rocked a tunnel under Lake Erie in Cleveland. With little hesitation, Morgan donned his invention and entered the chaos. He saved multiple workers trapped beneath the earth—risking his own life to prove his device could do what others hadn’t even imagined.
Despite his heroism, headlines of the day often left out his name. Why? Because Garrett Morgan was Black. His contributions were buried in the shadows of racial prejudice, even as his inventions were saving lives and modernizing cities.
Today, we’re changing that narrative.
Garrett Morgan didn’t just invent the gas mask—he proved it worked. And his legacy deserves to breathe.
🧠 Now you know.
Related Links:
The Forgotten Genius Behind the Gas Mask – YouTube Short
Who Was Garrett Morgan? – Biography
More “Forgotten Genius Friday” Episodes
📢 Watch the full 60-second episode on our YouTube series, “The Knowledge,” and help us give credit where it’s due.
Forgotten Genius Fridays
Forgotten Genius Friday: Madam C. J. Walker Built an Empire—and Opened Doors for Thousands
Born Sarah Breedlove to formerly enslaved parents, Madam C. J. Walker rose from poverty to build a national beauty business and create economic opportunities for thousands of Black women. Her remarkable journey transformed her into one of America’s greatest entrepreneurial pioneers.
Long before beauty brands became billion-dollar businesses and decades before women—especially Black women—had widespread access to business financing and professional opportunities, Madam C. J. Walker was building an empire of her own.
Born Sarah Breedlove in Louisiana in 1867, Walker rose from poverty and years of physically demanding work to become one of America’s most successful entrepreneurs.
Her achievement wasn’t simply about accumulating wealth.
Walker created products for an underserved community, developed an innovative nationwide sales network, trained thousands of women to become financially independent, and used her success to support civil rights and charitable causes.
Her journey remains one of the most remarkable stories in American business history.
From Sarah Breedlove to Madam C. J. Walker
Sarah Breedlove was born December 23, 1867, near Delta, Louisiana.
Her parents, Owen and Minerva Breedlove, had been enslaved, making Sarah the first of their children born into freedom following the Civil War.
Her childhood was difficult. Both of her parents died while she was young, leaving her orphaned at about seven years old.
She married at 14 and became a mother at 17. After the death of her first husband, she eventually moved with her daughter, Lelia—later known as A’Lelia Walker—to St. Louis.
There, Sarah worked as a washerwoman, reportedly earning little more than a dollar a day.
But she was determined to give her daughter something she herself had been denied: an education.
A Personal Problem Becomes a Business Idea
Around the turn of the 20th century, Walker began experiencing severe scalp problems and hair loss.
These conditions were common among many women at the time. Limited access to indoor plumbing, harsh soaps, poor nutrition, and inadequate hair-care products could contribute to scalp disease and hair loss.
Walker began experimenting with treatments while also learning about the growing Black hair-care industry.
She briefly worked as a sales agent for Annie Turnbo Malone, another pioneering Black entrepreneur whose Poro hair-care company became enormously successful.
That experience helped Walker understand both hair care and the potential of direct-to-consumer sales.
After moving to Denver, Sarah began developing and selling her own products.
Following her marriage to newspaper advertising salesman Charles Joseph Walker, she began doing business under the name that would become famous:
Madam C. J. Walker.
The “Walker System”
Walker didn’t simply sell jars of hair products.
She sold a complete hair-care method.
Known as the Walker System, it emphasized scalp cleanliness and healthy hair through regular washing, specialized products, heated combs, and careful grooming.
One of her best-known products was Madam Walker’s Wonderful Hair Grower, a scalp-conditioning treatment.
But perhaps Walker’s greatest innovation wasn’t contained inside a jar.
It was her business model.
Creating an Army of Women Entrepreneurs
Walker developed a network of independent saleswomen known as Walker Agents.
Women were trained not only to use and demonstrate Walker products but also to operate their own small businesses.
They sold products directly to customers, demonstrated hair-care techniques, and built relationships within their communities.
For Black women living in an era when employment opportunities were severely restricted by both racism and sexism, the Walker organization offered something extraordinary:
A pathway toward financial independence.
Thousands of women eventually became associated with the Walker sales network.
Walker also established training programs and beauty schools where women learned hair care, sales techniques, personal presentation, and business skills.
In many ways, the Walker Agents represented an early nationwide network of women-owned microbusinesses.
Building a Manufacturing Empire
As demand increased, Walker expanded her operation.
In 1910, she moved the headquarters of the Madam C. J. Walker Manufacturing Company to Indianapolis, Indiana.
The city offered strong transportation connections and access to a growing Black business community.
Her operation eventually included manufacturing facilities, a laboratory, training schools, mail-order operations, and a national network of sales representatives.
Walker became one of the most prominent Black business leaders in America.
Her success was particularly remarkable considering that she had begun her adult life working as a washerwoman.
Was Madam C. J. Walker America’s First Female Self-Made Millionaire?
Walker is frequently described as America’s first female self-made millionaire.
That description has become an important part of her legacy, although historians have debated exactly when her fortune crossed the million-dollar threshold and how the title should be defined.
What isn’t seriously disputed is the extraordinary scale of her accomplishment.
By the time of her death in 1919, Walker owned valuable real estate, operated a major national business and had accumulated substantial wealth at a time when Black Americans faced widespread discrimination, segregation and economic exclusion.
Her rise remains one of the most significant entrepreneurial achievements of the early 20th century.
Wealth With a Purpose
Walker believed success carried responsibilities.
She donated money to Black schools, churches, community organizations and charitable causes.
She supported the NAACP, the National Association of Colored Women and other organizations working to improve opportunities for African Americans.
Walker was also outspoken about racial violence.
Following the horrific East St. Louis racial violence of 1917, she became involved in efforts demanding federal action against lynching.
Her activism demonstrated that she viewed economic power as more than personal achievement.
It could also be a tool for social change.
Villa Lewaro
Walker’s success was perhaps most visibly represented by her magnificent estate in Irvington, New York.
Known as Villa Lewaro, the mansion was designed by pioneering Black architect Vertner Woodson Tandy.
Completed around 1918, the estate became a gathering place for prominent figures in Black politics, business and culture.
For Walker, the mansion also made a statement.
The daughter of formerly enslaved parents had become wealthy enough to build an extraordinary estate overlooking the Hudson River.
It was a visible challenge to the racial and gender assumptions of her era.
A Legacy Larger Than Hair Care
Madam C. J. Walker died on May 25, 1919, at only 51 years old.
But the business and economic network she created continued after her death.
Her daughter, A’Lelia Walker, became an important cultural figure during the Harlem Renaissance, using her wealth and social connections to support artists, writers and intellectuals.
More than a century later, Madam C. J. Walker’s influence can still be seen in beauty entrepreneurship, direct-sales businesses and the growing number of Black women building companies of their own.
Her story also provides an important reminder about innovation.
Innovation doesn’t always mean inventing a machine or discovering a scientific principle.
Sometimes innovation means recognizing an overlooked market, improving an existing idea, creating a better system and giving other people an opportunity to succeed along with you.
Why We Remember Madam C. J. Walker
Madam C. J. Walker began life as Sarah Breedlove, the daughter of formerly enslaved parents.
She was orphaned as a child.
She worked as a washerwoman.
She experienced poverty, discrimination and limited opportunities.
Yet she ultimately became a manufacturer, marketer, employer, philanthropist, activist and one of the most celebrated entrepreneurs of her generation.
Perhaps her greatest accomplishment wasn’t simply that she built an empire.
It was that she created a path for thousands of other women to build something of their own.
That’s why Madam C. J. Walker deserves to be remembered—and why her story belongs in Forgotten Genius Friday.
About Forgotten Genius Friday
Forgotten Genius Friday is an STM Daily News series highlighting inventors, innovators, entrepreneurs and overlooked historical figures whose ideas and achievements helped shape the world around us.
Know someone whose story deserves to be told? Leave a comment below, and subscribe to the STM Daily News newsletter so you don’t miss the next Forgotten Genius Friday.
Related Links
- National Women’s History Museum — Madam C. J. Walker Biography — A detailed overview of Walker’s rise from poverty, entrepreneurship, philanthropy, and civil-rights activism.
- Smithsonian National Portrait Gallery — Madam C. J. Walker — Features a historic circa-1914 portrait of Walker by photographer Addison N. Scurlock.
- Indiana Historical Society — Madam C. J. Walker — Explores Walker’s Indianapolis connection and points readers toward the extensive Madam C. J. Walker Family Archives.
- Indiana Historical Society — Madam C. J. Walker Digital Collection — A particularly valuable resource containing digitized photographs, business records, materials concerning Walker Agents, and documents from the Walker company.
- Smithsonian — Madam C. J. Walker Hair Product Tin — A fascinating look at an actual Walker hair-care product held by the Smithsonian and the history behind her beauty business.
Forgotten Genius Fridays
Forgotten Genius Friday: Marian Croak — The Inventor Behind the Way We Communicate
Marian Croak helped pioneer the technology behind internet calling and text-to-donate fundraising. With more than 200 U.S. patents, her innovations have transformed how millions of people communicate, work, and give.
Last Updated on August 7, 2026 by Daily News Staff
Every day, billions of people make video calls, join virtual meetings, send text-message donations during disasters, and stay connected with loved ones over the internet.
Few realize that one of the pioneers behind these technologies is Marian Croak, an engineer, inventor, and technology leader whose work has fundamentally changed how the world communicates.
Despite holding more than 200 U.S. patents and helping shape modern internet communications, Croak remains largely unknown outside the technology community. That’s exactly why she deserves a place in our Forgotten Genius Fridayseries.
From Engineering to Innovation
Marian Rogers Croak earned a bachelor’s degree from Princeton University before completing a Ph.D. in Social Psychology and Quantitative Analysis at the University of Southern California.
Her unique combination of engineering expertise and an understanding of human behavior would become one of her greatest strengths. Rather than simply building technology, she focused on solving real-world communication problems.
She joined Bell Labs, later becoming part of AT&T, where she spent decades developing new telecommunications technologies.
Helping Create the Internet Calling Revolution
For much of the twentieth century, telephone calls relied on dedicated telephone lines.
Croak helped pioneer technologies that made Voice over Internet Protocol (VoIP) practical, allowing voice conversations to travel over internet networks instead.
Today, VoIP powers countless services, including:
- Zoom
- Microsoft Teams
- WhatsApp calling
- FaceTime
- Internet-based business phone systems
- Telemedicine appointments
Millions of remote workers, students, families, and businesses depend on technologies that evolved from these innovations.
A Better Way to Help During Disasters
One of Croak’s most visible inventions came from a simple but powerful idea.
What if people could donate to disaster relief simply by sending a text message?
She led the development of systems that made text-to-donate campaigns possible.
Following disasters such as Hurricane Katrina and the devastating 2010 Haiti earthquake, millions of people contributed to relief efforts simply by sending a short text message. The technology helped raise tens of millions of dollars quickly, demonstrating how communication technology could save lives beyond making phone calls.
More Than 200 Patents
Croak has been awarded more than 200 U.S. patents covering internet communications, networking, emergency response systems, and digital collaboration.
Her inventions have influenced everything from enterprise communications to cloud networking and mobile technologies.
Leading Responsible Artificial Intelligence
In 2014, Croak joined Google as a Vice President of Engineering.
Today, she helps lead initiatives focused on Responsible AI and Human-Centered Technology, working to ensure artificial intelligence benefits society while addressing issues of fairness, accessibility, and trust.
Her career reflects an important lesson: innovation is not just about building powerful technology—it is also about building technology responsibly.
Honors and Recognition
Although Marian Croak spent decades working behind the scenes, her achievements have earned growing recognition.
Among her honors are:
- National Inventors Hall of Fame inductee
- National Academy of Engineering member
- American Academy of Arts and Sciences fellow
- IEEE Founders Medal recipient
These awards recognize a lifetime devoted to improving how people connect with one another.
Why Marian Croak Matters
Many inventors create products.
Marian Croak created possibilities.
Every internet phone call between grandparents and grandchildren, every virtual doctor’s appointment, every online business meeting, and every text-message donation during a humanitarian crisis reflects technologies she helped make possible.
Her story reminds us that some of history’s greatest innovators work quietly behind the scenes, changing the world without becoming household names.
That’s exactly the kind of legacy Forgotten Genius Friday exists to celebrate.
Related Links
- National Inventors Hall of Fame – Marian Croak — An excellent overview of Croak’s career, her work advancing VoIP, text-to-donate technology, and her induction into the Hall of Fame.
Learn more about Marian Croak at the National Inventors Hall of Fame - National Inventors Hall of Fame – The Problem-Solving Engineer — A deeper profile examining Croak’s path from an inquisitive young student to a telecommunications pioneer.
Read Marian Croak: The Problem-Solving Engineer - Google – Marian Croak — Croak’s official Google author and leadership profile, including her work in Responsible AI and Human-Centered Technology.
Explore Marian Croak’s work at Google - Google – Marian Croak’s Vision for Responsible AI — An interview exploring how Croak brought her decades of technological experience into the development of responsible artificial intelligence.
Read about Marian Croak’s vision for Responsible AI - Princeton University – Marian Croak and Innovation — Princeton highlights Croak, a member of its Class of 1977, and her contributions to VoIP, innovation, mentorship, and women in STEM.
Read Princeton’s profile featuring Marian Croak
🧠 Discover the remarkable innovators, inventors, and trailblazers who helped shape our world but rarely receive the recognition they deserve. Share your thoughts in the comments and subscribe to the STM Daily News newsletter to catch every new Forgotten Genius Friday feature and more inspiring stories delivered to your inbox.
The Knowledge
The First Heart Transplant: The Operation That Changed Medicine
On December 3, 1967, Dr. Christiaan Barnard performed the world’s first successful human-to-human heart transplant, opening a remarkable new chapter in medical history.
Last Updated on August 2, 2026 by Daily News Staff
On December 3, 1967, medical history was made in Cape Town, South Africa, when surgeon Dr. Christiaan Barnard performed the world’s first successful human-to-human heart transplant.
The groundbreaking operation took place at Groote Schuur Hospital and changed what doctors believed was possible.
A New Heart for Louis Washkansky
The recipient was Louis Washkansky, a 53-year-old grocer suffering from severe heart disease. His condition had deteriorated to the point that conventional treatments offered little hope.
The donor was Denise Darvall, a 25-year-old woman who suffered catastrophic brain injuries after being struck by a car. With permission from her father, her heart was donated to Washkansky.
Barnard and his surgical team removed Washkansky’s failing heart and replaced it with Darvall’s healthy heart. When the transplanted heart began beating inside its new recipient, a new era in medicine had begun.
He Survived Just 18 Days — But the Operation Was a Success
Washkansky survived for 18 days following the transplant. He ultimately died from pneumonia.
One of the greatest challenges wasn’t simply performing the surgery—it was preventing the recipient’s immune system from rejecting the transplanted organ. The drugs used to suppress Washkansky’s immune response also left him extremely vulnerable to infection.
Despite his short survival, the operation demonstrated that transplanting a human heart was possible.
The Science Behind the Breakthrough
Barnard’s achievement didn’t happen in isolation. Researchers and surgeons around the world had spent years developing the techniques that made heart transplantation possible.
Among the pioneers was American surgeon Dr. Norman Shumway at Stanford University, whose extensive experimental work on heart transplantation helped establish many of the surgical techniques used in the procedure.
Just weeks after Barnard’s historic operation, Shumway performed the first successful adult heart transplant in the United States in January 1968.
Over the following decades, improved surgical techniques and increasingly effective anti-rejection medications transformed heart transplantation from an experimental procedure into an established treatment for certain patients with end-stage heart failure.
A Medical Milestone
Today, thousands of heart transplants are performed around the world each year, and many recipients survive for years or even decades after receiving a donor heart.
What began with a daring operation in Cape Town in December 1967 helped open the door to an entirely new field of medicine.
The Knowledge: The first successful human-to-human heart transplant was performed by Dr. Christiaan Barnard on December 3, 1967, at Groote Schuur Hospital in Cape Town, South Africa. The recipient, Louis Washkansky, lived for 18 days after the historic procedure.
The Knowledge is an STM Daily News series exploring the inventions, discoveries, people and moments that helped shape the world we live in today.
Related Links
- University of Cape Town: The World’s First Human Heart Transplant — Learn more about Dr. Christiaan Barnard, Groote Schuur Hospital and the medical team behind the historic 1967 operation.
- University of Cape Town: 50th Anniversary of the First Human Heart Transplant — A retrospective marking the anniversary of the world’s first human-to-human heart transplant.
- Stanford Medicine: The First U.S. Adult Heart Transplant — Explore Dr. Norman Shumway’s pioneering research and the first adult heart transplant performed in the United States.
- OrganDonor.gov: Donation and Transplantation History — Review a timeline of major milestones in organ donation and transplantation.
- OrganDonor.gov: Matching Organ Donors and Recipients — Learn how donor organs are matched with patients awaiting transplants.
