Religious Composition of Countries
The world has become increasingly more secular in the last few decades. However, religion remains an integral part of many people’s lives, and 84% of the world’s population identifies with a religious group.
The religious profile of the world is rapidly changing, driven primarily by differences in fertility rates and the size of youth populations among the world’s major religions, as well as by people switching faiths.
With the help of data from Pew Research Center, we break down the religious composition of the major religions in countries worldwide.
Religious Makeup of the World by Major Religions
Determining the exact number of religions across the world is a daunting task. Many religions can be difficult to categorize or to tell apart for those not intimately familiar with their doctrine.
Pew Research Center organizes the world’s religions into seven major categories, which includes five major religions (Christianity, Islam, Buddhism, Hinduism, and Judaism), one category that broadly includes all Folk/Traditional religions, and an unaffiliated category.
Globally, Christianity has the largest following of these categories. Around 31% of the world’s population are Christians, closely followed by Muslims at 25%. Jews have the smallest population of major religions, with only 0.2% of the world identifying as Jewish.
Let’s take a look at the religious composition of the world when accounting for regions:
|Middle East-North Africa||3.6%||93.1%||0.6%||0.6%||1.6%||0.2%||0.3%|
From Islam being the dominant religion in the Middle East to over 95% of Cambodians and Thais following Buddhism, here’s how prevalent every major religion in the world is.
The world’s largest religion, Christianity, is practiced by about 2.4 billion people.
The country with the highest number of practicing Christians is the United States, with a Christian population of 253 million. Brazil and Mexico follow closely with 185 million and 118 million Christians, respectively.
Christianity has historically spread around the globe and today it remains a geographically widespread religion. Over the past century, it has become less concentrated in Europe while becoming more evenly distributed throughout the Americas, sub-Saharan Africa, and the Asia-Pacific region.
Even though it’s the predominant religion of countries in the Middle East and Northern Africa, by sheer number, countries in Asia have the highest percentage of practicing Muslims in the world.
It may surprise you to know that 14.2% of Indians are Muslim. As a result, the country is home to one of the world’s largest Muslim populations, surpassed only by Indonesia.
Islam is also the world’s fastest-growing major religion. The number of Muslims is expected to increase by 70%, from 1.8 billion in 2015 to nearly 3 billion in 2060. The fact that they have the youngest median age, at 24, also helps this population growth.
While Jews historically have been found all around the globe, Judaism is highly geographically concentrated today. More than four-fifths of all Jews live in just two countries: the United States and Israel. Israel is the only country with a Jewish majority, with 76% of the population being practicing Jews.
The largest remaining shares of the global Jewish population apart from the U.S. and Israel are in Canada (about 3% of the country’s population), France (2%), the United Kingdom (2%), Germany (2%), Russia (2%) and Argentina (between 1% and 2%).
The religiously unaffiliated population includes atheists, agnostics, and people who do not identify with any particular religion. 720 million of the Chinese population consider themselves religiously unaffiliated, while 78% of Czechs feel the same way.
However, it is worth noting that many of the religiously unaffiliated hold some religious or spiritual beliefs. For example, surveys have found that faith in God or a higher power is shared by 7% of unaffiliated Chinese adults, 30% of unaffiliated French adults, and 68% of unaffiliated U.S. adults.
Hinduism is the third-largest religion worldwide, with approximately 1.2 billion Hindus in many countries. Interestingly, however, Hinduism is the dominant religion in only three countries, India with 79%, Nepal with 80%, and Mauritius with 48%.
Although Hinduism is rarely a country’s primary religion, it still enjoys a global presence. Many regions around the world support significant populations of Hindus, including the Caribbean, Southeast Asia, North America, and South America.
According to estimates, half the world’s Buddhists live in China. Still, they make up only 18% of the country’s population. Most of the rest of the world’s Buddhists live in East and South Asia, including 13% in Thailand (where 93% of the population is Buddhist).
Buddhism in Asia is a matter of both identity and practice. Scholars and journalists have documented that many Asian countries may engage in Buddhist practices without considering themselves part of any organized religion.
Folk religion is any ethnic or cultural religious practice that falls outside the doctrine of organized religion. Grounded on popular beliefs and sometimes called popular or vernacular religion, the term refers to how people experience and practice religion in their daily lives.
As of 2020, an estimated 429 million people, about 6% of the world’s total population, were adherents of folk or traditional religions. Some notable folk religions include African traditional religions, Chinese folk religions, Native American religions, and Australian aboriginal religions.
Explainer: What to Know About Monkeypox
What is monkeypox, and what risk does it pose to the public? This infographic breaks down the symptoms, transmission, and more.
Explainer: What to Know About Monkeypox
The COVID-19 pandemic is still fresh in the minds of the people around the world, so it comes as no surprise that recent outbreaks of another virus are grabbing headlines.
Monkeypox outbreaks have now been reported in multiple countries, and it has scientists paying close attention. For everyone else, numerous questions come to the surface:
- How serious is this virus?
- How contagious is it?
- Could monkeypox develop into a new pandemic?
Below, we answer these questions and more.
What is Monkeypox?
Monkeypox is a virus in the Orthopoxvirus genus which also includes the variola virus (which causes smallpox) and the cowpox virus. The primary symptoms include fever, swollen lymph nodes, and a distinctive bumpy rash.
There are two major strains of the virus that pose very different risks:
- Congo Basin strain: 1 in 10 people infected with this strain have died
- West African strain: Approximately 1 in 100 people infected with this strain died
At the moment, health authorities in the UK have indicated they’re seeing the milder strain in patients there.
Where did Monkeypox Originate From?
The virus was originally discovered in the Democratic Republic of Congo in monkeys kept for research purposes (hence the name). Eventually, the virus made the jump to humans more than a decade after its discovery in 1958.
It is widely assumed that vaccination against another similar virus, smallpox, helped keep monkeypox outbreaks from occurring in human populations. Ironically, the successful eradication of smallpox, and eventual winding down of that vaccine program, has opened the door to a new viral threat. There is now a growing population of people who no longer have immunity against the virus.
Now that travel restrictions are lifting in many parts of the world, viruses are now able to hop between nations again. As of the publishing of this article, a handful of cases have now been reported in the U.S., Canada, the UK, and a number of European countries.
On the upside, contact tracing has helped authorities piece together the transmission of the virus. While cases are rare in Europe and North America, it is considered endemic in parts of West Africa. For example, the World Health Organization reports that Nigeria has experienced over 550 reported monkeypox cases from 2017 to today. The current UK outbreak originated from an individual who returned from a trip to Nigeria.
Could Monkeypox become a new pandemic?
Monkeypox, which primarily spreads through animal-to-human interaction, is not known to spread easily between humans. Most individuals infected with monkeypox pass the virus to between zero and one person, so outbreaks typically fizzle out. For this reason, the fact that outbreaks are occurring in several countries simultaneously is concerning for health authorities and organizations that monitor viral transmission. Experts are entertaining the possibility that the virus’ rate of transmission has increased.
Images of people covered in monkeypox lesions are shocking, and people are understandably concerned by this virus, but the good news is that members of the general public have little to fear at this stage.
I think the risk to the general public at this point, from the information we have, is very, very low.
–Tom Inglesby, Director, Johns Hopkins Center for Health Security
» For up-to-date information on monkeypox cases, check out Global.Health’s tracking spreadsheet
The Top 10 Largest Nuclear Explosions, Visualized
Just how powerful are nuclear bombs? Here’s a look at the top 10 largest nuclear explosions.
The Top 10 Largest Nuclear Explosions, Visualized
Just how powerful are nuclear explosions?
The U.S.’ Trinity test in 1945, the first-ever nuclear detonation, released around 19 kilotons of explosive energy. The explosion instantly vaporized the tower it stood on and turned the surrounding sand into green glass, before sending a powerful heatwave across the desert.
As the Cold War escalated in the years after WWII, the U.S. and the Soviet Union tested bombs that were at least 500 times greater in explosive power. This infographic visually compares the 10 largest nuclear explosions in history.
The Anatomy of a Nuclear Explosion
After exploding, nuclear bombs create giant fireballs that generate a blinding flash and a searing heatwave. The fireball engulfs the surrounding air, getting larger as it rises like a hot air balloon.
As the fireball and heated air rise, they are flattened by cooler, denser air high up in the atmosphere, creating the mushroom “cap” structure. At the base of the cloud, the fireball causes physical destruction by sending a shockwave moving outwards at thousands of miles an hour.
A strong updraft of air and dirt particles through the center of the cloud forms the “stem” of the mushroom cloud. In most atomic explosions, changing atmospheric pressure and water condensation create rings that surround the cloud, also known as Wilson clouds.
Over time, the mushroom cloud dissipates. However, it leaves behind radioactive fallout in the form of nuclear particles, debris, dust, and ash, causing lasting damage to the local environment. Because the particles are lightweight, global wind patterns often distribute them far beyond the place of detonation.
With this context in mind, here’s a look at the 10 largest nuclear explosions.
#10: Ivy Mike (1952)
In 1952, the U.S. detonated the Mike device—the first-ever hydrogen bomb—as part of Operation Ivy. Hydrogen bombs rely on nuclear fusion to amplify their explosions, producing much more explosive energy than atomic bombs that use nuclear fission.
Weighing 140,000 pounds (63,500kg), the Ivy Mike test generated a yield of 10,400 kilotons, equivalent to the explosive power of 10.4 million tons of TNT. The explosion was 700 times more powerful than Little Boy, the bomb dropped on Hiroshima in 1945.
#9: Castle Romeo (1954)
Castle Romeo was part of the Operation Castle series of U.S. nuclear tests taking place on the Marshall Islands. Shockingly, the U.S. was running out of islands to conduct tests, making Romeo the first-ever test conducted on a barge in the ocean.
At 11,000 kilotons, the test produced more than double its predicted explosive energy of 4,000 kilotons. Its fireball, as seen below, is one of the most iconic images ever captured of a nuclear explosion.
#8: Soviet Test #123 (1961)
Test #123 was one of the 57 tests conducted by the Soviet Union in 1961. Most of these tests were conducted on the Novaya Zemlya archipelago in Northwestern Russia. The bomb yielded 12,500 kilotons of explosive energy, enough to vaporize everything within a 2.1 mile (3.5km) radius.
#7: Castle Yankee (1954)
Castle Yankee was the fifth test in Operation Castle. The explosion marked the second-most powerful nuclear test by the U.S.
It yielded 13,500 kilotons, much higher than the predicted yield of up to 10,000 kilotons. Within four days of the blast, its fallout reached Mexico City, roughly 7,100 miles (11,400km) away.
#6: Castle Bravo (1954)
Castle Bravo, the first of the Castle Operation series, accidentally became the most powerful nuclear bomb tested by the U.S.
Due to a design error, the explosive energy from the bomb reached 15,000 kilotons, two and a half times what was expected. The mushroom cloud climbed up to roughly 25 miles (40km).
As a result of the test, an area of 7,000 square miles was contaminated, and inhabitants of nearby atolls were exposed to high levels of radioactive fallout. Traces of the blast were found in Australia, India, Japan, and Europe.
#5, #4, #3: Soviet Tests #173, #174, #147 (1962)
In 1962, the Soviet Union conducted 78 nuclear tests, three of which produced the fifth, fourth, and third-most powerful explosions in history. Tests #173, #174, and #147 each yielded around 20,000 kilotons. Due to the absolute secrecy of these tests, no photos or videos have been released.
#2: Soviet Test #219 (1962)
Test #219 was an atmospheric nuclear test carried out using an intercontinental ballistic missile (ICBM), with the bomb exploding at a height of 2.3 miles (3.8km) above sea level. It was the second-most powerful nuclear explosion, with a yield of 24,200 kilotons and a destructive radius of ~25 miles (41km).
#1: Tsar Bomba (1961)
Tsar Bomba, also called Big Ivan, needed a specially designed plane because it was too heavy to carry on conventional aircraft. The bomb was attached to a giant parachute to give the plane time to fly away.
The explosion, yielding 50,000 kilotons, obliterated an abandoned village 34 miles (55km) away and generated a 5.0-5.25 magnitude earthquake in the surrounding region. Initially, it was designed as a 100,000 kiloton bomb, but its yield was cut to half its potential by the Soviet Union. Tsar Bomba’s mushroom cloud breached through the stratosphere to reach a height of over 37 miles (60km), roughly six times the flying height of commercial aircraft.
The two bombs dropped on Hiroshima and Nagasaki had devastating consequences, and their explosive yields were only a fraction of the 10 largest explosions. The power of modern nuclear weapons makes their scale of destruction truly unfathomable, and as history suggests, the outcomes can be unpredictable.
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