Before the Panama Canal, there was the Panama railroad

The century of the Panama Canal

The Panama Canal connects the Atlantic and Pacific Oceans through a 51-mile route that transformed global shipping when it opened in 1914. This breakdown covers how it was built, the workers behind its construction, and why its future may be challenged by climate and competition.

Watch a ship pass through the Panama Canal

Many of the world’s cargo ships are built to be as large as possible while still being able to fit through the Panama Canal’s narrowest locks. The size standard even has a name: Panamax (and, since the canal’s expansion in 2016, Neopanamax). To avoid running against the canal walls, locomotives hold the vessels in place as the chambers are filled and emptied.

The Panama Canal boosted the US as a world power in trade, engineering, and finance

The effort proved the US could achieve grand engineering projects while granting it influence over (and benefitting economically from) a major interoceanic channel and its host country, Panama.

Nearly all American skilled workers deserted the canal worksite the first year

More than 75,000 workers labored to build the Panama Canal, and up to a third of them, by some estimates, died on the job. This gallery of 16 archival black-and-white photographs from PBS shows what life was like for the workers.

Drought conditions force fewer ships to sail the Panama Canal daily

In 2023, canal authorities reduced traffic in the canal amid severely dry conditions. These seven infographics from the Woodwell Climate Research Center explain exactly what happened that historically dry October, and how it affected global supply chains.

The canal became the first use of lock-and-lake system at a massive scale

The system centered around Gatun Lake, the largest human-made reservoir at the time, and two massive concrete locks that helped raise the ships 85 feet from sea level to the lake surface. The excavation was also the largest earth-moving project at the time, moving 240 million cubic yards of soil.

The Appalachian Mountains blocked east–west boat travel until the Erie Canal

The Appalachian Mountains, spanning from Alabama to Canada, long hindered inland commerce. The Erie Canal created the first reliable water route through the range by leveraging the natural valley of the Mohawk River, revolutionizing trade and migration.

The National Mall once had canals and rail lines

In the 1800s, the National Mall looked nothing like it does today. Canals, rail lines, markets, and industrial uses crisscrossed the Mall before later redesigns cleared it into a unified civic landscape.

What was the Great Inca Road?

In little more than 100 years, it grew from a small kingdom in the highlands of Peru to become the largest empire in the Americas. Read about the critical role played by the Great Inca Road.

A $50 bet led to the first coast-to-coast road trip

In 1903, Dr. Horatio Jackson took a $50 wager that he could drive from San Francisco to New York. Soon after, Jackson and his mechanic set out on the cross-country voyage without a map. They arrived in New York 63 days later. The trip cost them $260K in today’s money.

America’s first roller coaster initially transported coal instead of people

The Mauch Chunk Switchback Railway in the hills of Pennsylvania wasn’t initially intended to be a ride, but over time passengers and businessmen alike took advantage of the lovely tour through nature. The railway eventually reached over 100,000 riders in some years.

The first women to run the Colorado River discovered four plant species

Over 45 days and 660 miles, Elzada Clover and Lois Jotter identified more than 50 species in what was the first botanical survey of the region. Expected to help navigate boats and cook for the crew during the day, their work was confined to before dawn and after dusk.

Budweiser pioneered refrigerated rail transport for its beer in the 1870s

This enabled Budweiser to achieve national distribution long before competitors, fundamentally transforming the US beer industry. It was also among the earliest large-scale adopters to use pasteurization, allowing it to be shipped long distances without going bad.

Explore fun facts from the USPS, including unique post office buildings, a stamp that traveled past Pluto, and more.

The attack at Pearl Harbor led to the world's first around-the-world commercial flight

A World War II-era commercial flight was forced to change course when Pearl Harbor was bombed, leading the 12-member crew on the world's first commercial flight to circumnavigate the globe. The Boeing 314 crossed the equator four times during the journey, which totaled more than 30,000 miles and required the crew to strip the plane of any identifying marks.

Railroads and long-distance communication led to the development of time zones

Noon had been determined independently at each location based on when the sun was highest in the sky, but this became impractical for standardizing transportation. British star-mapping and navigation advancements established Greenwich as the prime meridian through Greenwich Mean Time, or GMT.

American Express stopped its rail service when President Wilson seized American railroads

After the US entered World War I, the federal government took control of American railways and consolidated rail companies. American Express officially exited the express shipping business in 1918 and turned its focus to its travel and financial services.

Explore fun facts from the USPS, including unique post office buildings, a stamp that traveled past Pluto, and more.

The British Royal Navy—not the US military—enforced the Monroe Doctrine for most of the 19th century

In the early to mid-1800s, the US lacked the ships and military power to prevent European nations from colonizing the Americas. Britain enforced this to protect its commercial interests by keeping rival European powers out of Latin America.

The southbound Underground Railroad: finding freedom in Mexico

Until recently, the southbound Underground Railroad, as some scholars call it, has been largely overlooked, mainly because it left so few traces in surviving records. Read this article to learn more about this dangerous path and its travelers.

Stanford built a Google Maps for the Roman Empire, revealing how much it cost to travel in the ancient world

The Civil War introduced many technological advances to both society and warfare

The conflict accelerated innovations—including railroads, telegraphs, ironclad ships, and mass-produced weapons—while advances in photography, medicine, and manufacturing transformed how Americans communicated, healed, and built after the war.

Henry Varnum Poor published a guide to the railroad industry in 1860

Poor's guide to the railroad industry helped investors evaluate changes and business decisions that might impact their investments. It was the first step in building the thorough datasets tracking companies and industries that Standard & Poor's is known for today.

The explorer who re-discovered Machu Picchu

If there was a real-life inspiration for Indiana Jones, it may well have been Hiram Bingham, the Yale University historian who set out to find the rumored “lost city” of the Inca. This short feature from the BBC’s History magazine explains how this son of missionaries brought international renown to the site and to himself. In the process, he sparked an international feud that would last more than a century.

Historians estimate only 1% of shipwrecks have been discovered

The oldest known shipwreck dates to around 2,700–2,300 BCE, but evidence suggests humans started open-ocean sailing at least 50,000 years ago. Many have completely deteriorated but artifacts aboard the vessels remain, while many lack historical records of the event or location.

He was one of the first writers to cover surfing

For his 1872 travelogue “Roughing It”, Mark Twain visited Hawaii and described a then-peculiar sport: surfing. He even recalls his own attempts to catch a wave, writing, “I got the board placed right, and at the right moment, too; but missed the connection myself. The board struck the shore in three-quarters of a second, without any cargo, and I struck the bottom about the same time, with a couple of barrels of water in me.”

Henry Ford once ran a failed rubber plantation in Brazil's Amazon Rainforest

In 1927, Henry Ford bought 2.5 million acres of land off the Amazon River in Brazil, with the intention of creating an American-style Ford factory to produce the rubber needed for tires. The development, known as Fordlandia, was never able to produce enough rubber, and Fordlandia was officially shut down in 1945.

In 1915, workers recovered a submarine-like vessel from the Chicago River, prompting fears of German espionage

The American cockroach is actually from Africa, an apparent hitchhiker aboard ships carrying enslaved people, with evidence suggesting the bug may have arrived in the New World as early as the 1600s.

'Grand Canyon of the Yellowstone,' a work by American painter Thomas Moran, inspired Congress to establish Yellowstone National Park.

Walt Disney's early film 'Alice's Wonderland' was a groundbreaking innovation in the silent film era

In 1984, Operation Smash Hit intentionally crashed a 239-ton train into a nuclear waste canister at 100 miles per hour to prove the canister's safety, which remained completely intact and lost just 0.29 of its 100 pounds of pressure.

For centuries, Niagara Falls has been a magnet for daredevils seeking to conquer one of nature's most powerful wonders, with its 200-foot drop and water rushing at 32 feet per second with 280 tons of force.

Abraham Lincoln was almost assassinated weeks before his inauguration as he traveled from Illinois to DC through Baltimore in 1861; it took two independent claims for Lincoln to be convinced the threat was real

Long before Major League Baseball began allowing instant replay for balls and strikes, an umpire reluctantly used the technology to determine whether a hit was a home run, a move that inadvertently ushered in a new era for the sport.

See a 3D reconstruction of Tenochtitlan, the Aztec capital that was home to an estimated population of 200,000 to 400,000.

Hurricanes, which rely on air consistently spinning in the same direction, cannot cross the equator because air curves in opposite directions north and south of it.

The United States has had a tumultuous relationship with Cuba since its 1959 revolution, highlighted by a nuclear crisis and a decades-long trade embargo.

This real-time tracking of the hantavirus cruise ship outbreak in May 2026 offers a unique glimpse into the global reach of the outbreak and whether the virus sickened passengers and their communities around the world.

After the Boston Tea Party, colonists switched to coffee, which became the main morning drink for revolutionaries.

A researcher recently discovered an interview from 1967 between groundbreaking journalist Joan Didion and the Grateful Dead, years before the band became an institution.

Before writing 'Walden,' transcendentalist Henry David Thoreau nearly burned down his hometown with a campfire that grew out of control.

In its famous catalog, Sears sold $600 DIY house kits from 1908 through the 1940s, resulting in an estimated 100,000 'Sears and Roebuck homes.'

Explore the history, structure, and species of Australia's Great Barrier Reef with this interactive journey narrated by Sir David Attenborough.

The Beatles' US label rejected the band's first two singles, 'Please Please Me' and 'From Me to You,' with one executive calling the band 'dead in the water.'

Waves off the coast of Nazaré, Portugal, can reach over 100 feet and are caused by the area's deep underwater canyon geography

'Shogun,' a 1980s TV series, helped popularize sushi in the US by stimulating an American interest in Japanese culture.

How Amazon operates a 'flywheel' business model, a self-reinforcing cycle that drives continuous growth

Recent research found that the brain doesn't seem to massively rewire following amputation—upending earlier beliefs about the cause of phantom limb pain.

Gerrymandering works through two techniques: cracking opposing voters across districts to dilute their power, and packing them into a few to waste their votes in lopsided majorities.