Early 20th-century ID cards protected trans people in Germany using hormone therapy

Gender-affirming hormone therapy cues changes similar to puberty

When HRT is part of gender affirmation care, people receive regular doses of estrogen or testosterone to alter hormone levels to more closely align with those of cis individuals of that biological sex. HRT may affect voice pitch, body hair, bone density, and more. Many of those changes are not reversible with the cessation of therapy, though the effects may diminish.

The WWII passport forgers who saved thousands of Jewish lives

Amid the chaos of Hitler's authoritarian Europe in World War II, Polish diplomats based in Switzerland used the classic toolkit of thieves to help free thousands of Jews: they perfected the art of forgery, faking passports secretly donated by sympathetic Latin American countries. Read the incredible tale of heroism here.

US women got the right to open a credit card in their own name in 1974

Before that year, banks in the US were legally allowed to deny women credit or charge them higher interest if they failed to get a male cosigner.

Cross-species transplantation has been attempted in medicine for more than 300 years

Early reported xenotransplantation attempts included 17th century efforts in France to transfuse blood from animals into humans. The poor results prompted France to issue a xenotransplantation ban. In the 19th century, researchers tried animal-to-human skin grafts from species including sheep, rabbits, dogs, cats, rats, chickens, and pigeons.

After her arrest, a technicality made it harder for Holiday to perform

The Cabaret Identification Card was required for all performers in New York nightclubs that served liquor. After her arrest and yearlong imprisonment, the New York Police Department revoked Billie Holiday's card, making it extremely difficult for her to earn money. The video features contemporary jazz musician Christian McBride breaking down the history of cabaret cards and how the ban affected Holiday.

Privacy advocates warn menstrual cycle apps could put women at legal risk in certain states

Smartphone apps that women may use to track their menstrual cycle and identify times of peak ovulation are not covered by data privacy laws. Included data could potentially be used against women during prosecution in states with abortion restrictions.

The 1935 Social Security Act drew inspiration from European social insurance models

Many of these, such as German Chancellor Otto von Bismarck's 1889 retirement system, emerged decades before America adopted them. This article dives into the modern history of economic security and the key legislation that created Social Security.

Cosmetic surgery during the Edwardian era

This 23-minute video explores cosmetic surgery in the United Kingdom during the Edwardian era, from about 1901 to 1914. Reconstructive surgery already existed by then, though it wasn't considered elective as it was used to repair damage suffered...

Georgia urges residents to wear clothes in driver's license photos

A program in Georgia allows residents to create digital IDs from home for quicker passage through airports, and officials have had to warn users to be clothed in the photos they produce for the ID.

German Nazi war crimes suspect, 96, who went on the run goes on trial

A 96-year-old German woman who was caught shortly after going on the run ahead of a court hearing last month on charges of committing war crimes during World War Two appeared before a judge on Tuesday in the northern town of Itzehoe.

Two-spirit relationships and identities

Queer relationships and transgender people aren’t new. Even though gay marriage has been legalized fairly recently in Western countries, people all over the world have engaged in relationships beyond heterosexuality throughout the centuries. Although contemporary tribes have various views around homosexuality, there are numerous examples of queer relationships within indigenous traditions across what is now called the Americas.

Eduard Baltzer encouraged 'natural eating' in the 1860s

Historian Corinna Treitel credits the Protestant minister with inventing the concept of “natural eating” in Nordhausen, Germany, in the 19th century. Baltzer believed that people were consuming excessive amounts of schnapps, sugar, and meat, and that this behavior was having a detrimental impact on their lives. He encouraged a diet mostly of fruits and vegetables, though he was not opposed to food grown with artificial fertilizers.

Marie Curie developed and trained women to operate mobile X-ray units in World War I

The “petites Curies” allowed medical professionals to identify the severity of wounds without transporting soldiers to medical facilities, expediting treatment and saving lives. The efforts of Curie and other women led to expansions in their rights after the war.

Australian psychiatrists already prescribe psilocybin and MDMA for depression and PTSD

The country green lighted the treatments for July 1, 2023, onward, with MDMA—ectasy—as a post-traumatic stress disorder treatment, and psilocybin—magic mushrooms—as an option for people with treatment-resistant depression.

Paper boarding passes have become rarer in recent years

Many travelers have shared their attachment to the documents as their utility fades. This sharply illustrated timeline reviews the development of the paper boarding pass as technology evolved.

Oktoberfest revelers wear traditional dress

Lederhosen (short leather pants) and dirndls (dresses with lace-up bodices) are found everywhere at Oktoberfest, This short documentary explores the resurgence of traditional clothing in Germany, which extends beyond Oktoberfest.

Can your identity be preserved amid dementia?

Memory loss associated with progressive dementia raises questions about whether a person's identity can be maintained during the disease's progression. One outlook suggests we define ourselves by our social relationships—offering a potentially more humane approach to caring for those with dementia.

Public transit has been a front line of civil rights battles for over a century

Public transit was among the most contested terrain in the fight for racial equality in America, because it was where Black Americans and white Americans were unavoidably forced to share public space.

The hormonal disorder PCOS was renamed PMOS in 2026, a move designed to improve care and research by shifting the focus to the hormonal causes of this condition that affects 1 in 8 women.

Modern genetic testing stems from a 1950s discovery about the cause of Down syndrome

Scientists found that an additional copy of chromosome 21 causes the disease and developed an approach to stain chromosomes so they could be manually sorted and counted, which is called karyotyping. The breakthrough discovery by Marthe Gautier, a young French doctor and cytogenetics researcher, was appropriated by a male colleague, who listed himself as the lead author of the study reporting the finding.

Contactless credit cards descend from a batteryless Cold War listening device

The same physics that let Soviet spies eavesdrop on the US ambassador in 1945 underlie contactless payment methods today. The device is a passive chip powered wirelessly by incoming radio waves.

Diagnosis as an adult can have huge benefits, including helping someone with ASD to feel real

This first-person account of a woman diagnosed with autism at age 31 covers her experience of why it was useful for her to receive her diagnosis as an adult and how it helped her to understand her life and her feelings of 'being an imposter.'

The Medicis of Italy innovated 'bills of exchange,' precursors to checks

At the time, lending money for interest (also known as usury) was banned in much of the Christian world. The enterprising Medicis developed bills of exchange to allow merchants to promise payment without cash or coin (with some discrete means of earning interest woven in). Learn more about how this family laid the foundation for modern banking.

Deinstitutionalization in the 20th century unintentionally led to the incarceration of schizophrenia patients

Activism to shut down problematic asylums in the mid-20th century led to the community release of many patients with severe mental illnesses, including schizophrenia, but without adequate support, this deinstitutionalization in the 1960s and 1970s led to a significant increase in patients with schizophrenia ending up in prisons and homeless shelters.

Witness the birth of punk rock through the archives of an influential music magazine

Trouser Press magazine (originally Trans-Oceanic Trouser Press) was an influential publication that operated from 1974 to 1984. During that time, they ran cover stories on emerging acts like the Sex Pistols, the Clash, and others, offering contemporary readers a window into how punk was understood as it evolved.

The 'golden age' studio system often controlled actors' personal lives

The "Big Five" studio system minted stars, but it also tightly controlled their personal lives. Homosexuality, in particular, was seen as a liability. One example is Rock Hudson, a major star in the 1950s and '60s, who was forced into an arranged marriage with his agent's secretary.

Clever Hans was a 1900s horse that was believed to be able to solve math equations, tell time, and read and comprehend German, until a psychology student discovered how he got his answers.

The first line of 'immortal' human cells, which can divide indefinitely and are used in scientific research, was nonconsensually taken from a Black woman.

The story of Dollree Mapp, whose legal challenge over her 1957 conviction for possessing "obscene material" led to a major strengthening of the Fourth Amendment

Telehealth demand for GLP-1s for weight loss is booming as consumers seek easier access.

At the beginning of the 20th century, a group of young men ate standard American food—replete with food additives like borax and formaldehyde—as part of government research to better understand food safety.

Hookworm infection, though risky, may help fight certain autoimmune conditions by tamping down the immune system's inflammatory response.

Astronauts have repaired genetic damage in space using CRISPR—a molecular tool that can make precise changes to DNA and is used in single-celled organisms to attack invasive viruses.

American dance legend Martha Graham, sometimes called 'the Picasso of dance,' refused to perform at the 1936 Olympics in Berlin and conceived the piece 'Chronicle' in response to the experience.

Doctors differentiate between a phobia and fear by asking patients whether their fear interferes with their day-to-day activities.

20,000 letters to the advice columnist 'Dear Abby' provide insight into prevailing sex, religion, and LGBTQ fears, anxieties, and concerns from the 1950s onward.

See 33 images that became central to huge scandals, including a young Charles and Camilla, Michael Jackson's baby on a hotel balcony, and Hugh Grant's mugshot.

The idea for the Federal Reserve was conceived in secret in 1910—with bankers donning duck hunt gear for disguise while traveling to a remote country club on Georgia's Jekyll Island

The concept of phantom limbs, the perception that amputated limbs are still present, dates back to a French military surgeon in the 16th century.

70 years ago today, city officials in Santa Cruz, California, banned rock 'n' roll to protect its youth from corruption after witnessing a 'provocative' concert the night before.

Against his wishes, Albert Einstein's brain was removed before his cremation, and the pathologist responsible stored it for decades in mason jars within a beer cooler.

The Brothers Grimm were lawyers before they were storytellers, and became interested in fairy tales as they began investigating how rules and customs had been passed down through cultures.

Brandi Chastain, the star of the 1999 US victory over China in the 1999 Women's World Cup, was a last-second choice to take the penalty kick that sealed the victory.

Poison ivy was sent to Europe in the 1600s as an exotic, ornamental oddity, where it was purposefully grown in the English royal gardens at Kew, the Faculty of Medicine in Paris, and a few other locations.

For centuries, it was common to sleep in two shifts: a few hours at the beginning of the night, and a longer period beginning around midnight

In 1963, a basement renovation in Turkey revealed a passageway to a hidden, multilevel underground city that once housed as many as 20,000 people

The identity of the Tank Man in the iconic photo from the 1989 Tiananmen Square protests remains unknown and was possibly killed.

While the first exchange-traded fund (a 'basket' of different assets that can be bought and sold on a stock exchange) in the US only launched in 1993, the global ETF market has grown to more than $10T in the short time since.

Some coin denominations have ridges etched on their sides, partly to prevent counterfeiting, in a practice called 'reeding.'

The US Constitution is widely regarded as the longest-standing written national constitution still in force—see how it has influenced rights worldwide.