Thomas Edison created the first strand of electric Christmas lights in 1880

Before electric lights, Christmas trees were lit with real candles

The practice of lighting Christmas trees with electricity didn’t begin until the late 1800s. Before that, families used wax candles on branches—a dangerous tradition that originated in 16th-century Germany.

A collective effort from multiple scientists and inventors led to the light bulb

While Thomas Edison's thin carbon filament design made light bulbs commercially viable, prior contributions, such as Joseph Swan's development of the first successful incandescent filament electric lamp, made its eventual invention possible.

Martin Luther is often cited as the first to decorate the Christmas tree—though the practice began decades earlier

Luther lore claims he may have been the first to link tree decorations to Jesus, as he used candles to symbolize the Nativity star. However, German bakers had adorned evergreens with apples and sweets as early as 1419 for Christmas Eve displays.

Queen Victoria and Prince Albert popularized the Christmas tree in 1840s Britain

An 1848 engraving of Queen Victoria and Prince Albert around a decorated Christmas tree sparked a trend across Britain and the US. Their German-inspired custom quickly became a fashionable centerpiece of holiday celebrations.

The first commercial Christmas card was created in 1843

Overwhelmed by the task of writing many holiday letters, Sir Henry Cole commissioned artist JC Horsley to design a festive card he could send to friends and family in 1843—creating and popularizing the first mass-produced Christmas card.

Watch a timeline of the history of electricity, from observations of static electricity in antiquity to the War of the Currents—a rivalry to establish the ideal system for electric grids.

Thomas Edison publicly executed animals with AC to convince the public of its dangers

J.P. Morgan first backed Thomas Edison's direct current system, seeing electricity's potential to usurp John D. Rockefeller's kerosene empire. Despite the investments and smear campaign against alternating current, alternating current ultimately won public support after lighting the 1893 World's Fair, after which Morgan would fund Tesla's wireless transmission tower.

The Rockefeller Center Christmas tree was first erected in 1931 by construction workers

The tradition of erecting a tree in Rockefeller Center officially began two years later, when the company continued what the Depression-impacted workers had started. Today, its lighting and nearby ice skating draw millions annually, making it one of America’s most famous holiday traditions.

See Rockefeller Center's Christmas trees since 1931

In 1931, with construction still underway, Rockefeller Center's very first Christmas tree was erected out front. John D. Rockefeller himself greeted the construction workers who put up the first 20-foot tree and decorated it with cranberries and paper garland.

Tesla's alternating current power's most of the world's electric grids

In 1879, Thomas Edison’s light bulb relied on direct current, but such currents can't efficiently transmit power over long distances. Nikola Tesla introduced alternating current, which feature far fewer energy loses. Despite Edison’s attempts to discredit AC, Tesla proved its efficiency by lighting the 1893 Chicago World’s Fair.

A brief history of Christmas tree design

A celebration of the Christmas tree in all its festive glory. Get a glimpse into its intriguing background and the lore that accompanies it.

Explore a gallery of electric vehicles from before 1920

In 1884, Thomas Parker invented the first practical electric car in London. By the turn of the century, early EVs were seen on the streets of Washington, DC. Automaker promotional materials included photographs of cars on mountain roads and other terrains.

Mall Santas became a widespread tradition beginning in the 1900s

Santa Claus and commercialism are inextricable. In the early 1900s, department stores started putting “live” Santa Claus displays in their windows to help sell goods.

Charles Dickens transformed Christmas into an important family-centric holiday

When Charles Dickens published "A Christmas Carol" in 1843, its story of an old man's redemption helped reshape the holiday, popularizing themes of generosity, reflection, and family that transformed the Christmas season.

Thomas Edison captured the only known footage of Mark Twain

The inventor was a pioneer in the early film industry and made his own motion pictures. In 1909, he shot a short film featuring Twain at Stormfield, his property in Connecticut. In it, Twain wears his iconic white suit and drinks tea with his daughters.

The history of the North American power grid, which is composed of five major grids

Thomas Edison's Pearl Street Station was the first US commercial power plant, burning coal to power lamps for some Manhattan residents. Over time, local power plants would be bought out by larger ones, forming interconnected systems spanning multiple states. Today, the Eastern Interconnection and Western Interconnection are the largest of these systems.

See how artificial Christmas trees are made

Modern artificial Christmas trees are built from bent steel frames and PVC plastic. The plastic is cut into strips and shredded to mimic the needles of an evergreen tree. See the factory process of these mass-produced holiday mainstays.

Thirty weird facts about Christmas trees

From its fascinating origin to how yours is grown today, these incredible Christmas tree facts will add a little bit more wonder to your holiday season.

There’s a solid argument to be made that Macy’s was the inventor of the retail Santa

The Macy’s website claims that retail Santas—the Christmas icons who invite children to meet them at department stores and malls around the holidays—have been visiting the store since the 1860s.

Before the invention of transistors, vacuum tubes made radio possible

Discovered by Thomas Edison, vacuum tubes allow electrical currents to travel through empty space. Later modified into a diode—keeping current flowing in only one direction—vacuum tubes allowed electronics to turn alternating current into direct current.

The unexpected origin story of the snow globe

In 1900, a Vienna tradesman named Erwin Perzy I was attempting to invent an inexpensive way to improve light amplification in hospital operating rooms. After experimenting with a glass globe filled with water, the idea for the snow globe struck. Industrious as well as inventive, Perzy eventually turned his idea into a successful business. Read the full article to learn how the invention grew to become recognized globally.

Thomas Edison inadvertently spurred the film industry's move to Hollywood

The inventor's patent on the motion picture camera included several stipulations that required independent movie studios to work with Edison's Motion Picture Patents Co., making the East Coast undesirable for aspiring filmmakers.

Two Americans solidified the modern conception of Santa Claus in the 1800s

Clement Clarke Moore’s 1823 poem, now known as “The Night Before Christmas,” envisioned Santa riding a sleigh pulled by reindeer, making nighttime visits to provide gifts. Thomas Nast’s Harper’s Weekly illustrations in the 1860s–1880s established his distinctive appearance—large, bearded, and clad in an (often) red suit.

LEDs emit pure colors, while incandescent bulbs filter white light

Traditional Christmas lights produce softer, less saturated colors by partially blocking the full spectrum of light, resulting in a particularly warm glow by dimming the cooler blue tones. LEDs are designed to emit a single wavelength of light, creating intense colors that are visually unbalanced in multicolor environments.

Christmas elves evolved from Norse mythology to Santa’s workshop

Elves originated as powerful human-sized beings in Norse mythology, closely tied to nature and fertility. In the 1800s, American writers reimagined them as tiny, toy-making assistants for Santa Claus, with later visual depictions by Norman Rockwell and Disney solidifying their role in Christmas folklore.

The first rooftop solar panels were installed in 1883

In 1883, New York inventor Charles Fritts created the first solar cell by coating selenium with a thin layer of gold. The cell achieved energy conversion rates of 1 to 2% compared to the 15 to 20% of modern photovoltaics.

Nikola Tesla was born in modern-day Croatia and moved to the US in 1884

His interest in electricity came from his mother, who invented small household appliances during Tesla's upbringing. Upon arriving in America, he began working for and improving upon the electrical inventions made in Thomas Edison's lab.

Christmas carols evolved from medieval folk songs to modern holiday staples

Christmas carols began as communal folk songs in medieval Europe, and were later adapted into religious hymns. Revived in England in the 19th century, they have become a core holiday tradition around the world.

The first tattoo gun was based on an electric pen invented by Thomas Edison.

Christmas was briefly banned in 17th-century England

In the 1640s, Puritans outlawed Christmas, deeming it wasteful and unbiblical. For nearly two decades, celebrations were suppressed and violators fined, though many ignored the ban. The law was repealed in 1660.

The title of 'World’s Largest Christmas Tree' is disputed

Cities in the US, Italy, Germany, and the Netherlands all claim they have the world’s largest Christmas tree—ranging from massive evergreens, TV and communication towers, and hillside light displays.

Red and green became Christmas colors thanks to holly—and Coca-Cola

Holly's green leaves and bright red berries linked the colors to winter festivals for centuries, but Coca-Cola's 1931 Santa—painted by Haddon Sundblom in Coke-red robes—helped cement red and green as the modern Christmas palette.

Rockwell helped define the American Christmas

Rockwell painted 30 Christmas covers for the Saturday Evening Post. Drawing on his love of Charles Dickens’ “A Christmas Carol,” Rockwell placed the holiday’s unofficial traditions in an American context, with images of eager children, snow-covered small towns, and warm family meals.

Named after Nikola Tesla, who pioneered alternating current power systems, the Tesla coil was the first device to wirelessly transmit electricity.

Macy’s revolutionized retail with fixed pricing, pay-upfront policies, and marketing

The brand soon grew into a cultural icon, hosting the first in-store Santa in 1862, and launching the Macy’s Thanksgiving Day Parade in 1924, now a holiday staple. Its flagship Herald Square store became the world’s largest, and its festive window displays set a new standard for holiday celebrations.

Christmas trees are a $6B global industry

In the US, the real tree industry is valued at $2B, the reflection of nearly 30 million trees sold annually at an average profit of about $10 per tree. While each tree takes about 8 years to mature, their artificial counterparts can be made much more quickly, mostly in China, valued at over $1B as of 2020.

Benjamin Franklin described a series of static electricity storage jars as 'batteries'

Discovered over 50 years before the first electrochemical cell was invented, Leyden jars stored electric charge between the metals inside and outside a liquid-filled container. Franklin was the first to use the term "battery" in an electrical sense, though his multiple-jar device—lacking chemical reactions—was actually a series of capacitors.

The first chocolate Advent calendar appeared in 1958

Chocolate Advent calendars began in 1958, when German companies first paired the traditional countdown with small pieces of chocolate behind each door. The idea spread slowly at first, but eventually became one of the most popular Advent calendar formats worldwide.

A New York fireworks ban necessitated a new way to ring in the New Year

In 1906, the city banned fireworks displays, forcing the Times Square celebration to find a new centerpiece. The Times commissioned Jacob Starr, a Ukrainian immigrant who worked for Strauss Signs, to develop an ornament. He returned with the now-iconic New Year’s ball.

Learn about the relationship between Thomas Edison and Henry Ford

Despite their 16-year age difference, legendary inventor Thomas Edison and Henry Ford developed a close relationship after meeting at a convention in New York. The two—alongside environmentalist John Burroughs and Harvey Firestone, the founder of Firestone Tire—were known as the "Four Vagabonds" and were famous for their long roadtrips, which were often highly publicized.

Niagara power helped electrify early New York City

Tesla's AC system at Niagara Falls was so successful that electricity generated there lit up Broadway theaters and powered NYC's subway system in the early 1900s.

In the 20th century, Valentine's Day became more commercialized

Historian Elizabeth Nelson notes that companies sought "to turn holidays into opportunities for selling things from candy to flowers to magazine advertisements" in the 1900s. Hallmark, founded in 1911, pushed the holiday toward elementary students, who aimed to collect cards from as many classmates as possible.

Nearly 40% of American cars were electric in 1899

They were most common in cities, where battery swap stations allowed drivers to "refuel" their vehicles reliably. Innovations in combustion engines caused electric cars to lose ground until environmental policies and advances in battery technology revitalized interest.

The first printed Advent calendars were from Germany in the early 1900s

Printed Advent calendars originated in early-20th-century Germany, where printer Gerhard Lang created the first commercially produced versions. Inspired by his mother’s homemade countdowns, Lang added small doors in the 1920s, establishing the format that spread worldwide.

Light therapy was widely used as a medical treatment for various maladies in the early 1900s before it was replaced by antibiotics.

A dispute about the origin of twitching frog legs led to the invention of the first battery

Experiments by Luigi Galvani on exposed frog leg nerves showed activity when they were hung from iron railings and brass hooks, suggesting the existence of "animal electricity" that discharged when connected to metals. Alessandro Volta's voltaic pile, which stacked metals with an inorganic electrolyte, showed that electricity originates from chemical reactions.

Santa Claus is the result of centuries of evolving traditions

Originating from Saint Nicholas, a 4th-century bishop celebrated for his generosity, Santa's story merged with European folk legends like Sinterklaas and Father Christmas. By the 1800s, American culture redefined him, thanks to Clement Clarke Moore’s poem "'Twas the Night Before Christmas" and Thomas Nast’s illustrations.

Thomas Edison, eager to communicate with ghosts, tinkered with an apparatus called the 'spirit phone.'

The world's first geothermal power plant was built in 1913 in Devil's Valley

In Tuscany, Italy, Prince Piero Ginori-Conti of Trevignano established the plant nine years after creating a generator that powered five light bulbs using steam vents in the area. Within three years, a second plant was built with two generators, each with 10 times the energy output of the first.

Artificial Christmas trees can range from about $85 to $1K or more

In 2022, 22.34 million real Christmas trees were purchased and sold at a median price of $80. Even so, from a price standpoint, a fake tree is usually the less expensive option in the long run, as they're reusable and can save time and maintenance.