When Tesla died in 1943, the FBI seized his property for national security

Tesla's lack of business savvy and inability to commercialize led to his obscurity

For decades, despite pioneering technologies for large-scale electrical systems and telecommunications, Nikola Tesla had been forgotten to history. Rather than monetizing his work and becoming more well known, his inventor-first mentality saw him sell off lucrative patents to fund new experiments in the short term.

No proof of Nikola Tesla developing a working 'death ray' exists

He described his "teleforce" weapon as generating beams of concentrated particles that could destroy targets from 250 miles away with unparalleled precision. Analysis of Tesla's papers on the subject by an expert after his death revealed the work to be mostly speculative.

J.P. Morgan provided Nikola Tesla with funding for the Wardenclyffe Tower

The structure was part of a project to transmit electricity and communication signals wirelessly across the globe. Shortly after construction began, Guglielmo Marconi beat Tesla to the punch and transmitted a trans-Atlantic signal, preventing Tesla from getting additional funding to finish his project.

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.

A pair of engineers began Tesla to prove the viability of electric vehicles

Martin Eberhard and Marc Tarpenning sought to design a high-end electric sports car for environmentally motivated, affluent buyers. The Tesla Roadster would be the first highway-legal car to use lithium-ion batteries.

Searching for Albert Einstein's stolen brain

Within moments of Einstein's 1955 death, someone reportedly ferreted away the 76-year-old genius's brain. Decades later, a reporter's editor told them to solve the case. This 64-minute podcast episode follows the work of Steven Levy, the reporter who ultimately tracked down Einstein's brain, which had been sliced and stored in slides, goo, and a cardboard box in a scientist's office.

Einstein warned the president that splitting atoms could lead to powerful bombs

In a 1939 letter to Franklin D. Roosevelt, Albert Einstein explained that nuclear fission could produce immense energy—and devastating weapons. The warning helped spur the Manhattan Project, a role Einstein later deeply regretted.

Tim Cook refused to give the FBI a backdoor into iPhones during a terrorism case

The Apple CEO's refusal to comply with the government's request was viewed as controversial, despite support from privacy advocates. The FBI would later back down, claiming to have gained access to the device without disclosing additional details.

The FBI surveilled Roosevelt for decades, suspicious of her civil rights and political work

J. Edgar Hoover's FBI maintained a large file on Eleanor Roosevelt, monitoring her involvement with civil rights groups, connections to progressive causes, and vocal opposition to McCarthyism. Although a formal investigation was never initiated, Hoover regarded her as a person of interest for most of her adult life.

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 Manhattan Project created secret cities that didn’t appear on maps

To maintain secrecy, the US built three remote research facilities and entire “secret cities” to house thousands of workers and families. These communities—home to tens of thousands—were omitted from official maps until after World War II.

Adolf Hitler deeply admired Henry Ford, citing him as an inspiration for "Mein Kampf"

Hitler frequently praised Ford's anti-semitic viewpoints, both before and during the Holocaust. While Ford denied being sympathetic to the Nazi regime, Hitler kept a portrait of Ford on his desk, and Ford accepted the highest military award available to a foreign citizen from the Nazi government.

A reclusive billionaire ran Sears before its bankruptcy

Former Sears CEO and hedge fund manager Eddie Lampert was once kidnapped from his home in Greenwich, Connecticut by criminals looking to get rich. Some argue that the incident colored Sears’ history.

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

The inventor was interested in developing a scientific method for communicating with the dead. He was not interested, though, in the occult figures who believed the dead could be reached through Spiritualism, which he found childish. He believed those kinds of people "permit themselves to become, in a sense, hypnotized into thinking that their imaginings are actualities."

Picasso was on trial for the theft of the 'Mona Lisa'

On August 22, 1911, the world was stunned by the theft of the "Mona Lisa" from the Louvre in Paris. As an international investigation searched for the culprit, a young Picasso was suspected to be part of a group of its thieves. While innocent in the disappearance of the Mona Lisa, he found himself on trial with reasonable suspicion: He was in possession of two Iberian statues that were the property of the same museum.

The Wrights’ patent battles delayed the development of aviation technology in the US

By the time World War I began in 1914, the US was lagging behind European powers in aviation. This stemmed primarily from wars over patents between the Wrights and competitor Glenn Curtiss. The pair argued their 1906 patent covered all mechanisms enabling lateral flight.

The history and operation of SIGABA, the US counterpart of the Nazi Enigma machine

Developed by the US Army and US Navy, over 10,000 of these machines were deployed by the end of World War II to encrypt messages for the armed forces using three series of rotors. The device would continue to be used until the 1950s, while personal computers were shown to possess enough computing power to crack it by 2021.

Camus died in a car crash, which some believe was orchestrated by the KGB

Albert Camus died in 1960, at the age of 46, after his publisher's car crashed into a tree. Italian author Giovanni Catelli, however, alleges that what appeared to be an accident was actually an assassination by the Soviet spy agency as a way to silence the French writer's anti-Soviet beliefs.

Conspiracy theories persist around Dr. Martin Luther King Jr.'s 1968 assassination

Despite multiple investigations—including FBI inquiries and a 1979 House committee report—questions and conspiracy theories have continued to surround the 1968 assassination of Dr. King long after his assassin’s conviction.

How the NSA has changed through history

The National Security Agency was born in the Cold War and then transformed by 9/11. This article answers all the basic questions you might have about the NSA, from what it does to how much data it collects to some of its useful intercepts.

Half of the richest people in the US are finding ways around death taxes

One of the main purposes of the federal estate tax is to crack down on generational wealth, so wealth isn't concentrated among a select few. However, the ultra-rich have found ways around paying these taxes. This ProPublica article investigates the practices used by half of the 100 richest people in the US to avoid death taxes.

The history of many kitchen appliances involves unexpected discoveries and applications, including wartime radar turned hamster defroster and replacing an 'ice king' with heat-stealing boxes.

Palantir's executives have become increasingly involved in American politics in recent years

Palantir's government contracts have steadily increased since Donald Trump was re-elected in 2024, moving from intelligence and defense to public health and assisting in Elon Musk's Department of Government Efficiency efforts.

A visit to the Federal Helium Reserve, which once supplied up to 30% of US helium

The underground storage facility in Amarillo, Texas, was established by the Helium Act in 1925, when helium was viewed as a strategic resource whose export could enable other nations to use it for military airships. The Helium Privatization Act of 1996 instructed the Department of the Interior to begin selling off the facility and reserve, with the final sale occurring in 2024.

The locksmith who posthumously opened Prince's music vault

When legendary musician Prince died in 2016, he left behind thousands of unreleased songs in a locked vault, and no one knew the combination (even Prince had forgotten it before his death). Safecracker Dave McOmie was called in to break the 6,000-pound Mosler American Century vault by microdrilling into it and using a periscope to view the combination lock.

By 2024, Nvidia had become one of the world’s most valuable companies

Nvidia started as a graphics chip designer for PCs and consoles. This explainer traces its rise from early GPU innovation to powering AI breakthroughs and fueling the data centers behind today’s biggest tech platforms.

'Fahrenheit 451' is a perennially banned dystopian story

This late-in-life interview with Ray Bradbury, author of “Fahrenheit 451,” details the book’s origins, providing background for one of the most popular titles in dystopian literature. As a book lover, Bradbury was horrified by the book burnings of Nazi Germany and imagined a version of the United States where firemen were censors, protecting their fellow citizens from literature’s harmful ideas. “We are a democracy of readers,” Bradbury explains. “And we should keep it that way.”

The name 'Silicon Valley' arose from the founding of Shockley Semiconductor Laboratory in Fairchild Semiconductor in 1956-57, founded near Stanford University in Palo Alto

Discover the catastrophic consequences of a failure of the US electrical grid—something that is more likely than many Americans think.

In 2019, a laptop loaded with six of the worst malware in history and described as 'an exhibit of historical weaponry' sold for $1.3M.

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

US intelligence allegedly pursued more than 600 schemes to assassinate Cuban revolutionary Fidel Castro.

SpaceX's S-1 or 'prospectus' revealed many previously unknown details about the company, including its unprofitability despite doing $18.7B in revenue in 2025, exactly how many voting shares Elon Musk will have in the company (roughly 85%), and more.

In 2025, four executives from large tech companies were given positions in the US Army Reserves—including Palantir Chief Technology Officer Shyam Sankar, which reinforced Palantir's ties with the US military and its role as a leading defense partner.

The Mona Lisa's celebrity status and repeated restorations have obscured what made the painting so revolutionary for its time

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

In 1945, Surrealist artist Salvador Dalí and legendary animator Walt Disney began collaborating on a short film that was not completed until 2003, years after both men had died.

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.

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.

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

In 2009, the nation was gripped by the story of a missing young boy who was believed to be floating over Colorado in a homemade balloon, until it was revealed that he was at home the whole time.

A 2019 Facebook event called on attendees to "Storm Area 51, They Can't Stop All of Us," resulting in countless memes, the creation of a music festival, and eventually the arrests of those who did try to approach the area.

Warren Buffett's former professor Benjamin Graham is known as the 'father of value investing,' a strategy in which investors seek to buy stocks trading below their intrinsic worth.

Sony set the standard for cylinder-shaped batteries when it repurposed manufacturing equipment used to make rolls of magnetic recording tape.

See a ranking of the best (and worst) Federal Reserve Chairs since 1914 out of the 16 men and women who have held the office since.

While atoms are normally made of protons, neutrons, and electrons, exotic ones have been built with antimatter—alternate versions of normal matter that live for fractions of a second and are about a billion times as rare.

Famed poet TS Eliot rejected the manuscript for George Orwell's political fable 'Animal Farm,' writing that its criticism of authoritarianism was not 'the right point of view.'

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.

Sunflowers have long been a symbol of nuclear disarmament because they can extract large amounts of radioactive cesium from soil.

The price of gas is a composite made up of several different factors, with the federal gas tax making up less than 20% of what drivers pay at the pump.