Robert Oppenheimer became the face of the Manhattan Project and the atomic bomb

Oppenheimer reflected on the atomic bomb's legacy two decades later

In a 1965 CBS interview, J. Robert Oppenheimer discussed his role as Los Alamos director, expressing deeply mixed feelings about Hiroshima and Nagasaki and reflecting on how nuclear weapons had transformed the world since their first use.

Interviews from the Manhattan Project

This is an archive of interviews with people who worked on and were impacted by the Manhattan Project, the World War II-era effort that resulted in the atomic bomb. Listen to the "father of the atomic bomb," Julius Robert Oppenheimer, describe his daily routine during the project, which he reports officially started Dec. 6, 1941. This archive also includes interviews with survivors of the Hiroshima and Nagasaki bombings.

Meet the the scientists of the Manhattan Project

This resource profiles the scientists behind the Manhattan Project—from Nobel laureates like Fermi and Bethe to controversial figures like Teller and Fuchs—showing how their ideas, rivalries, and choices shaped the development of the atomic age.

J. Robert Oppenheimer’s grandson says his grandfather would back nuclear power

While the "father of the atomic bomb" referred to the bomb as "an evil thing," after the Manhattan Project, he also described nuclear energy’s potential as an environmentally friendly solution to address the world's energy problem.

A four-part podcast traces how the Manhattan Project reshaped the world

This podcast series explores the origins of the Manhattan Project, its secret cities, and the scientists behind it—showing how the effort contributed to the end of World War II, launched the Atomic Age, and later led Oppenheimer to become a critic of nuclear weapons.

Manhattan Project explained

Driven by fears of a Nazi nuclear bomb, the Manhattan Project united leading scientists to build the first atomic weapons. Its success ended World War II, caused catastrophic human loss, and launched the nuclear age that reshaped global politics and science.

Building the first atomic bomb required unprecedented coordination

Creating the first atomic bombs demanded breakthroughs in physics, engineering, and logistics—uniting elite scientists with tens of thousands of workers across the US. This in-depth history explains how the Manhattan Project overcame those challenges.

Cillian Murphy won best actor for his portrayal of Robert Oppenheimer

Cillian Murphy won Best Actor for his portrayal of Robert Oppenheimer in "Oppenheimer". The major critical and commercial success brought the Manhattan Project into popular culture and sparked renewed public interest in the nuclear age.

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.

Learn more about the three sites that powered the Manhattan Project

The Manhattan Project relied on three main sites: Oak Ridge, which enriched uranium; Hanford, which produced plutonium in large reactors; and Los Alamos, which designed and assembled the bombs—work that culminated in the Trinity nuclear test in 1945.

The story of the Manhattan Project's unused demon core

A 3-inch, 14-pound sphere of nuclear reactive plutonium-gallium was set to be delivered to the Pacific Theater in 1945 to become the third atomic bomb dropped over Japan. When Japan surrendered, it was returned to Los Alamos in New Mexico for experiment, where two scientists would die testing whether the core could reach criticality—where it would release intense energy—via the use of a dense reflector. Watch the story here.

John Hersey’s ‘Hiroshima’ focused on the stories of atomic bomb victims

The nonfiction book is considered one of the earliest pieces of New Journalism and an arresting case against nuclear warfare. Describing the pain, wounds and trauma of six ordinary citizens, “Hiroshima” played a powerful role in American perception of the war by focusing on its human toll.

The discovery of the neutron paved the way for nuclear weapons

In 1932, James Chadwick discovered the subatomic particle when trying to explain the radiation emitted by beryllium after it was bombarded with alpha particles. The radiation’s ability to eject protons from a target suggested a chargeless particle with slightly more mass than a proton.

How Robert Oppenheimer determined when neutron stars become black holes

Building on the work of Richard Tolman and George Volkoff, Oppenheimer reasoned that, once massive enough, a hypothetical, star-sized atomic nucleus would be unable to stave off gravitational collapse with neutron degeneracy—quantum pressure—alone. The mathematical model estimated the maximum mass of a non-rotating neutron star, known as the Tolman-Oppenheimer-Volkoff limit.

Alfred Nobel invented dynamite and later used his fortune to fund peace prizes

Nobel stabilized dangerous nitroglycerin to create dynamite, revolutionizing construction and mining in the 19th century. Despite his success with explosives, he was deeply disturbed by their destructive potential and redirected his legacy toward rewarding human progress.

Frank Lloyd Wright was known for his uncompromising personality and visionary architecture

Written the year of his death, this article reflects on Wright’s notorious arrogance and difficult personality that kept him at odds with his contemporaries and the architectural establishment of the time. However, his boldness was an essential trait that helped define his legacy.

Why Captain America sparked outrage in 1940

In 1940, Captain America’s debut showed him punching Hitler months before the US entered WWII. The bold cover sparked backlash and even threats.

Grace Hopper was inspired to join the armed forces after the attack on Pearl Harbor

Despite being too old to enlist and weighing below the required minimum to serve, Hopper was granted an exemption and assigned to work on the first electromechanical computer produced in the US. She and her team spent three months using the device to solve equations needed to design the implosion mechanism for the atomic bomb.

Rockwell's Saturday Evening Post created an idealized American life

The Saturday Evening Post’s circulation exploded in the early 20th century, due in no small part to Rockwell’s iconic cover illustrations, which often portrayed idyllic portraits of American life from the not-so-distant past. This documentary explores how Rockwell’s covers played on national nostalgia, creating a vision of the country that grew to be associated with the American Dream.

Fueled by Cold War competition, the Apollo program put humankind on the moon

Despite the US starting the space race behind the Soviet Union, which had put a cosmonaut into space in 1961, the successful landing of Apollo 11 on the moon in 1969 was seen as a defining victory for America.

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.

Bob Noyce coinvented the integrated circuit, cofounded Intel and Fairchild Semiconductor, and is considered one of the founders of Silicon Valley

Some even called Noyce the “Mayor of Silicon Valley.” According to Steve Jobs, he was the “ultimate inventor, rebel, and entrepreneur.” This Founders episode dissects an article from 1983 that explains Noyce’s lasting impact.

Even at the height of his popularity, Spielberg felt like an outsider

By 1992, Spielberg was already one of the most successful names in Hollywood, but he had trouble kicking the alienation he’d felt as a kid. In this interview from 1992, on the cusp of the biggest year of his career, he talks about that feeling and how it motivated him.

Hughes testified before Sen. Joseph McCarthy’s Subcommittee on Investigations

In 1953, the writer was interrogated by the Subcommittee’s chief counsel, Roy Cohn, about communism and its impact on his work. Cohn quoted lines from poems like “Goodbye, Christ” and “Ballads of Lenin,” but Hughes denied that he was a communist, explaining that poetry should not be taken literally. “That is a poem,” he told Cohn. “One can not state one believes every word of a poem.”

The life of Anthropic's CEO, and how losing his father inspired his vision for AI

In 2006, Riccardo Amodei passed away from a rare illness, four years before a breakthrough treatment made it 95% curable. Seeking to accelerate scientific progress to prevent similar losses, Dario Amodei shifted his graduate studies at Princeton from theoretical physics to biology and has since pursued technological solutions to address complex biological problems.

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.

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

See the most iconic photos from four decades of LIFE magazine

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

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.

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.

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.

Learn more about the history of fireworks, which dates back to an accidental invention during an alchemist's quest for information about immortality.

In 1939, baseball star Lou Gehrig delivered his inspirational 'Luckiest Man' speech after retiring due to the health condition that now bears his name.

American short story writer Flannery O'Connor raised 40 peacocks, which became potent symbols for her fiction's elegant violence

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

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

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

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.

Before humans, the Soviet Union and the United States sent animals—including apes, dogs, and cats—to space during the Space Race.

Double world record holder Hunter Ewen helped conquer his fear of balloons, called globophobia, by training to win Guinness World Record titles for balloon inflation.

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.

The first image of a black hole was captured by creating an Earth-sized virtual observatory from a network of eight radio telescopes.

Explore an interactive map of battles from the American Revolution, along with detailed summaries of each engagement

Legendary architect Frank Lloyd Wright designed the SC Johnson headquarters in Wisconsin, aiming to make a cathedral-like workplace

An initial public offering or 'IPO' is the process of a private company becoming public by putting shares of the company on the stock market for purchase.

In 2018, 26-year-old missionary John Allen Chau was killed by tribesmen after attempting to reach and evangelize on India's isolated North Sentinel Island

Visualize how CRISPR-Cas9—a type of immune system used by single-celled organisms to attack invasive viruses—targets and makes precise changes to a gene's DNA.

A small portion of The Winstons' 'Amen, Brother,' an obscure '60s gospel record, is the basis for thousands of hip-hop tracks, making it one of the most sampled records ever that's informally known as 'the Amen break.'