Glassblowing has captivated artisans and audiences alike for more than two thousand years. Originating in the ancient Middle East, the technique spread quickly1 across the Roman Empire and beyond. Today, glassblowing studios operate on every continent, keeping a tradition alive that, for a time, seemed destined11 to be replaced by industrial manufacturing.
The process itself is both demanding and remarkably beautiful.2 A glassblower begins by gathering a molten mass of glass onto the end of a long metal pipe called a blowpipe. By blowing steady streams of air through the pipe, the artisan inflates the glass into a hollow bubble. Gravity, centrifugal force, and the skillful use of hand tools are then applied to shaping the piece into its final form. Because molten glass cools rapidly, the artisan must work quickly3 to manipulate the material before it hardens beyond control.
Among the most celebrated contemporary glassblowers is Seattle-based artist Renata Solís, whose studio has attracted students from across the globe. Solís learned her craft in Murano, Italy, a small island near Venice that has been a center of glassblowing excellence since the thirteenth century. She returned to the United States determined to establish a space where the technique would be taught freely and accessibly. In 2009, her studio began offering weekend workshops open to anyone, regardless of previous artistic experience.12
The workshops have proven transformative for participants. Many arrive expecting a straightforward craft demonstration, and instead, they discover13 a physically intense, meditative experience. Working near a furnace that reaches temperatures exceeding 2,000 degrees Fahrenheit, students quickly learn that patience and focus are essential.5 A single lapse in concentration can cause a piece to collapse or crack. Yet the satisfaction of holding a finished glass vessel that one has shaped by hand is, according to Solís, unlike anything else.6
Solís also prioritizes sustainability in her practice. She sources cullet—recycled broken glass—7 from local restaurants and construction sites, melting it down to create new works. This approach significantly reduces the energy required to produce raw glass from silica.8 Solís believes that honoring a centuries-old craft does not mean ignoring modern responsibilities. By integrating environmental awareness into her studio's mission, she has helped ensure that glassblowing remains both culturally vibrant and conscientious10 well into the future.
Marine biologist Sylvia Earle has spent more than six decades studying the ocean, and her dedication to understanding Earth's underwater world is unmatched. Growing up near the Gulf of Mexico, she developed a fascination with sea creatures at a young age, spending hours observing tide pools47 along the Florida coast.
By the time Earle entered college, she had already decided to devote her career to marine science. In 1964, she participated in the International Indian Ocean Expedition, one of the first large-scale scientific surveys of that body of water.48 Years later, in 1970, she led a team of women aquanauts in a groundbreaking underwater habitat project called Tektite II. Living beneath the surface of the sea for two weeks, the team collected an enormous amount of data on marine ecosystems. The experience, she later recalled, changed her perspective on the ocean permanently.49
Wearing a specially designed pressurized suit, she walked along the ocean floor50 for two and a half hours, observing bioluminescent organisms that glowed in the absolute darkness.58 The encounter was, she described, like stepping onto another planet.51
Beyond her scientific work, Earle has been a forceful advocate for ocean conservation. She has argued persistently52 that overfishing, pollution, and climate change pose existential threats to marine life worldwide. Through her nonprofit organization, Mission Blue, she has championed the creation of marine protected areas, which she calls "Hope Spots"—regions of the ocean where conservation efforts are concentrated and enforced.53
Earle's influence has extended into the classroom as well. Partnering with educators across the country, she has helped develop curriculum materials57 that introduce students to oceanography and environmental stewardship. Her books, documentaries, and lectures have inspired countless young scientists59 to pursue careers in marine biology.
Although Earle is now in her eighties, her advocacy shows no signs of slowing.56 She continues to dive, conduct research, and speak publicly about protecting the ocean. For Earle, the sea is not merely a subject of scientific inquiry—a living, breathing system that sustains all life on Earth,55 and its preservation is nothing less than urgent.
As a young woman growing up in rural Kenya, Wangari Maathai watched the streams near her home run clear and full. By the time she returned from graduate school in the 1970s, however, those same streams had slowed to muddy trickles.45 Forests had been cleared for export crops, leaving soil vulnerable to erosion and communities without firewood or clean water.
Determined to reverse this damage, Maathai founded the Green Belt Movement in 1977. Working alongside rural women, she discovered that planting trees could address several crises at once.32 The trees stabilized soil, restored watersheds, and provided families with a renewable source of fuel. Critically, the movement also gave women a sense of agency and purpose33 and participation in decisions that shaped their lives.
The Kenyan government, then led by President Daniel arap Moi, did not welcome Maathai's activism, however.34 Officials viewed her environmental campaigns as thinly veiled political protests, and she was repeatedly arrested, beaten, and publicly ridiculed. Despite these threats, Maathai refused to abandon her work. Her courage only deepened35 the international community's admiration for her cause.
By 2004, when Maathai became the first African woman to receive the Nobel Peace Prize, the Green Belt Movement has planted36 more than thirty million trees across Kenya. The Nobel Committee praised her for linking environmental conservation with democracy and human rights, arguing that access to natural resources and the protection of civil liberties are, in fact, deeply connected.37 Maathai herself often said that a healthy environment was the foundation of peaceful societies.
Her influence extended well beyond Kenya's borders. Governments and organizations across Africa adopted similar approaches, modeled on the Green Belt Movement's community-centered methods.38 In schools, students learned that caring for local ecosystems is an act39 of civic responsibility. Maathai's legacy continues to grow: the movement she started now operates in more than thirty countries and has collaborated with40 international bodies to train hundreds of thousands of community leaders.
Wangari Maathai died in 2011, but her ideas remain urgently relevant. As climate change accelerates the very crises she spent her life fighting, the lesson she planted—that ordinary people, working collectively, can restore both land and dignity—continues to take root41 around the world.
Marine biologist Sylvia Earle has spent more than six decades studying the ocean's most remote and least explored16 environments. Growing up near the Gulf of Mexico, she developed an early fascination with underwater life that never faded. By the time she enrolled in graduate school, Earle had already decided that the deep sea—not the laboratory—would be her primary workplace.17
Earle's most celebrated achievement came in 1979, when she descended to a depth of 381 meters off the coast of Hawaii in a pressurized suit attached to a submarine. Walking alone along the ocean floor, she marveled18 at the bioluminescent creatures drifting around her. The dive set a record for the deepest untethered walk by a human being and demonstrated that such exploration was possible and worthwhile.19
20 Earle recognized that the ocean remained dangerously misunderstood by the general public. She founded a company called Deep Ocean Exploration and Research, known as DOER, to design submersibles capable of reaching the ocean's deepest, darkest, and most inaccessible regions.21 Her goal was not merely technological: she wanted scientists and policymakers to see firsthand what overfishing and pollution was doing to these fragile ecosystems.22
Through her work with the National Oceanic and Atmospheric Administration, where she served as chief scientist, Earle pushed for the establishment of marine protected areas—zones where fishing and drilling are prohibited so that23 marine life can recover. She argued that protecting the ocean was inseparable from protecting human health, since the ocean produces24 more than half of Earth's oxygen and absorbs vast quantities of carbon dioxide.
Earle has also written dozens of books and articles aimed at general audiences, translating complex oceanographic data into language that anyone can understand. Her 2009 TED Talk, which called for the creation of a global network of marine reserves, became one of the most-watched science presentations in TED's history. Critics who once doubted whether a single scientist could shift public opinion about ocean conservation25 have largely been proven wrong. Earle's career stands as evidence that passionate advocacy, grounded in rigorous science, can change the way entire societies think about the natural world.30
Yuki Tanaka grew up watching her grandmother repair broken pottery in a small workshop outside Kyoto. The practice, known as kintsugi, involves mending cracked ceramics with lacquer mixed with powdered gold, silver, or platinum. Rather than disguising damage, kintsugi celebrates it, treating each fracture as a part of the object's history.1
After studying fine arts in Tokyo, Tanaka returned68 to Kyoto determined to bring kintsugi to a global audience. She opened her studio in 2008, and within a few years she was hosting workshops that attracted visitors from dozens of countries. At first, many students arrived expecting a simple craft class; they were surprised62 by the philosophical depth behind the technique. The Japanese concept of wabi-sabi, which finds beauty in imperfection and impermanence, is central to everything Tanaka teaches.2
Tanaka's approach extends well beyond fixing dishes or bowls. She has repaired antique vases for museums, restored a seventeenth-century tea ceremony set72 for a private collector, and even adapted kintsugi principles to mend cracked wooden furniture. Her belief is straightforward: an object's journey—including its breaks and repairs—makes63 it more beautiful, not less. Critics and collectors have responded enthusiastically, praising her work for its intricate, delicate craftsmanship.64
She is equally passionate about accessibility.65 Tanaka offers sliding-scale workshop fees so that students of varied economic backgrounds can participate. She also donates a portion of her studio's annual revenue to arts education programs in underfunded rural schools. Giving back to the community, she says, is inseparable74 from the spirit of kintsugi itself. Mending, after all, is an act of care.71
In recent years, Tanaka has begun documenting endangered regional pottery traditions across Japan. Working alongside local artisans, she records techniques that might otherwise disappear and posts instructional videos69 on a multilingual platform. The project has been praised by cultural preservation organizations, which have described66 her efforts as vital. Tanaka, however, deflects the praise modestly,67 insisting that the artisans themselves deserve the recognition.
Tanaka's work reminds us that beauty does not require perfection. By honoring cracks73 rather than concealing them, she has transformed an ancient repair technique into a living philosophy70—one that resonates with anyone who has ever tried to put something broken back together again.5