Who’s who at the Vatican?

Everything you need to know about the Tomb of Saint Peter

The Tomb of Saint Peter lies in Vatican City, a city-state surrounded by Rome, Italy. This comprehensive video explains the history of the apostle’s burial site and the brand-new technological developments surrounding it. Start your journey in Ancient Rome, learning how the Vatican got its name, and end with Microsoft’s AI technology that allows curious people from all around the world the ability to tour and interact with the space.

A close look at the figures in Michelangelo's Sistine Chapel

The ceiling of the chapel—the site at the Vatican in Rome where the Roman Catholic Church selects the pope—was painted between 1508 and 1512. There are dozens of figures depicted on the ceiling and walls pulled from the Bible's Old Testament, with the centerpiece the nine center panels covering the Creation, Noah's Ark, and more. Explore a rich interpretation of the piece in this video.

Pope Francis and his distinctive approach to leading the Catholic Church

Pope Francis, born Jorge Mario Bergoglio, was known for promoting social and economic justice rather than just traditional moral teachings while he led the Catholic Church. During his papacy, he exhibited a more open point of view towards historically controversial matters related to marriage, sexuality, the priesthood, and celibacy—and not without criticism. Reflect on his legacy and how he changed the church in this video.

Observant Catholics can donate organs because the official Catholic stance is brain death is death—enabling organ donation

The Vatican states that brain death, when properly diagnosed, means that a person is dead even though machines can keep them alive. That official stance from Catholic leadership and echoed by most Catholic doctors and ethicists enables the families of observant Catholics to proceed with organ donation.

Andy Warhol’s Catholic background influenced his art

Warhol’s life and work hold clear religious through lines, from his Byzantine Catholic upbringing to reexaminations of his catalog, including an unfinished work for the 1968 world’s fair commissioned for the Catholic Church through a local Catholic university.

Large family offices often employ 25 to 40 people

The structure of a family office varies depending on its size and its needs, and can employ a range of workers from top executives to assistants and tax professionals.

How NATO works

NATO now includes 32 member nations—but how does the alliance actually function? This explainer breaks down its structure, decision-making process, and funding model. From its founding in 1949 to its collective response after 9/11, here’s how NATO operates on a global scale.

How banking works

To do big things, people often need more money. Banks jumpstart economic activity with loans paid back with interest, and when things are working well, both people and the bank make more money. Formed in the Middle Ages amid competing currencies in Italy, banks—from the Italian for bench, banco—helped stimulate that era's commercial revolution, a massive expansion in Mediterranean trade and development. Find out the ins and outs of banks in this quick explainer video.

Explore what each organelle does within various types of cells

In "Cell Anatomy Viewer," users can explore interactive illustrations of animal, plant, fungal, and bacterial cells. Clicking on an organelle, such as a lysosome, the nucleolus, or the Golgi complex, provides descriptions of its characteristics and functions.

Engineer explains VR at five levels of complexity

While its possible to grab a virtual reality headset and hop into an immersive world with little effort, a significant amount of technical and biological science has gone into creating the effect of a 3D world. This video breaks down the technology in five layers of increasing complexity.

Compare how justice ministries and courts are structured around the world

The Federal Judicial Center's "Judiciaries Worldwide" series provides clear and accessible comparisons of how various countries organize their justice ministries, prosecutors, courts, and judicial councils—emphasizing global models of independence, oversight, and institutional structure.

College endowments FAQ

​The National Association of College and University Business Officers (NACUBO) is a membership organization representing chief administrative and financial officers at colleges and universities. This page addresses 10 common questions about college endowments, including their purposes, management, and spending policies. Learn more about how endowments support institutional missions and financial sustainability.

What is vaccination? The World Health Org explains

Read up on the basics of vaccinations with this 101 from the World Health Organization, the public health arm of the United Nations.

Inside a congressional office, the scheduler is more powerful than you think

A former congressional scheduler explains that a member's time is the scarcest resource in any Hill office, and controlling the calendar means understanding every competing claim on it, from the legislative team to the member's family. The interview demystifies how a typical House office actually functions, from staff hierarchies to outside resources like the Congressional Research Service.

View the ecosystem of global services, organizations, and agencies behind the internet

Through an open, transparent, and collaborative model built on open standards development and shared global ownership, the internet is kept freely accessible amid evolving international policies. Key organizations, such as IANA, which allocates IP addresses and fulfills administrative functions for the Domain Name System, function as non-profit organizations.

Catholic education has grown smaller in the 21st Century

Declining numbers of priests and nuns, who often worked in the schools for free, led schools to increase tuition, which inadvertently turned away the schools’ primary demographic: working-class immigrant families. At the same time, the sexual abuse scandals of the early 2000s left many others feeling like Catholic schools were dangerous.

How starting a union works

Starting a union within a workplace is a long, complicated process. There are many steps to take depending on how management reacts to each decision workers make during the proceedings. If you’re interested in helping your workplace unionize—or curious about what the journey to unionization looks like—this video can help.

View the internal structure of the sun and its puzzling surrounding atmosphere

From the stellar core to the surface, the sun's density decreases from more than 10 times that of lead to 0.00001% that of air, while temperatures drop from millions to thousands. Temperatures increase from the sun's surface to the outermost layer of its atmosphere—the corona—a phenomenon whose explanation is still under investigation.

Technically speaking, Christian Dior SE is the primary holding company of LVMH

That's because it owns about 42% of LVMH's shares and controls about 57% of its voting rights. It's a complex relationship, given that Christian Dior the fashion house is one of LVMH's "maisons."

The president's powers are defined in Article II of the US Constitution

Article II establishes the presidency, outlining powers to command the military, sign or veto legislation, appoint officials, and conduct diplomacy—many of which are intended to be checked by other branches of government.

The Aztecs worshipped a vast pantheon of more than 200 gods

This detailed visualization breaks down how Aztec deities were identified through symbolic cues—colors, garments, poses, and objects—each reflecting specific powers and mythologies. It highlights fearsome figures like Tlaltecuhtli, the earth monster depicted with a gaping maw, said to devour the sun each night.

How March Madness Selection Sunday works

March Madness is one of the most popular American sporting events, but most viewers aren't aware of how its 68 teams are selected for the prestigious national tournament. This official process overview breaks down how the teams are selected, seeded, and placed into the bracket. Knowing the ins and outs might not stop you from disputing the committee's selections, but at least you'll understand how they came to those decisions.

Advent marks the beginning of the church calendar in Western Christianity

Each denomination’s calendar of holy days varies, but most mark the start of a new year at the beginning of Advent. Within Roman Catholicism, Advent is a distinct period from Christmas, alongside other seasons: Ordinary Time, Lent, Easter, Holy Week, and Pentecost.

Understanding the structure of the Chinese phonetic alphabet

Translating Chinese names from Chinese to English characters is a complex process, one in which the original name’s meaning can become muddled. This article uses graphics to explain the structure of Hanyu Pinyin, the most commonly used Chinese phonetic alphabet. Visualize how the Pinyin romanization system can lead to name ambiguity, and therefore make it challenging to identify individuals based solely on Pinyin.

The Illuminati were a real espionage society in the 1770s

Bavarian professor Adam Weishaupt founded the group in 1776 as an anti-clerical, anti-royalist sect that used hierarchy, codes, and surveillance as a proto-spy network. Within a decade, it was suppressed, but the mythology never quite died. Today, it functions as an adaptable conspiracy theory, able to fit any era's anxieties about who really holds power.

The power and influence of the American presidency have expanded significantly over time—far beyond what the founders envisioned.

See how each of the more than two million known species relates to each other—and to common ancestors—in this zoomable tree of life.

Most of the observable universe's volume consists of voids and supervoids—enormous regions of space with little to no galaxies, stars, or light.

The syncytiotrophoblast is the outer layer of the placenta and the largest human cell, spanning an area about twice that of a king-sized bedsheet.

Watch this video that uses Lego bricks to explain how venture capital works.

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

While the sun's gravity keeps the planets in orbit, their gravity also pulls on the sun, causing it and everything else in the solar system to orbit around a mutual balance point called the barycenter—the true center of the solar system.

Explore the archaeological treasures of Pompeii, the city buried under volcanic ash when Mount Vesuvius erupted in 79 CE.

Ebola is a filovirus, meaning it resembles a thread under a microscope, though it sometimes twists and can resemble a bowl of spaghetti.

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.

Learn how your body is, scientifically, like a firework with its own slow, controlled burn.

Take a 3D tour of the Hajj, Islam's annual pilgrimage to Mecca, undertaken by more than 1.5 million Muslims each year.

Hedge funds, the private investment firms that trade a wide swath of financial assets, make money by imposing steep fees on investors and from the fund's investment performance.

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

Calculate how much of your tax dollars go to each federal program based on your income, filing status, and number of children

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

Chaos theory—informally known as the butterfly effect—is the reason why weather forecasts are presented with probabilities rather than certainties.

See how Budweiser's famous Clydesdales spend their days at Warm Springs Ranch, where roughly 70 to 80 of the beer brand's giant horses can be found at any given time.

A Yale student wrote a profound essay about the consulting industry's influence on elite college students that was published in a book of her writing after she died in a post-graduation car accident.

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.

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

Objects can be 3D printed with light by projecting 2D computerized tomography (CT) scans onto rotating cylinders of resin, which solidify upon exposure.

Corals are themselves not coral reefs—the term refers to the tiny marine invertebrates that build the rigid reef.

NBA superstar Victor Wembanyama spent the 2025 summer training with monks in central China to enhance his body and mind.

Power lines are dotted with large, brightly colored balls to improve the visibility of these thin wires to helicopters and small planes and help prevent potential crashes.