Once a week.
Subscribe to our weekly newsletter.
This is the best (and simplest) world map of religions
Both panoramic and detailed, this infographic manages to show both the size and distribution of world religions.
- At a glance, this map shows both the size and distribution of world religions.
- See how religions mix at both national and regional level.
- There's one country in the Americas without a Christian majority – which?
China and India are huge religious outliers
Credit: Carrie Osgood
A picture says more than a thousand words, and that goes for this world map as well. This map conveys not just the size but also the distribution of world religions, at both a global and national level.
Strictly speaking it's an infographic rather than a map, but you get the idea. The circles represent countries, their varying sizes reflect population sizes, and the slices in each circle indicate religious affiliation.
The result is both panoramic and detailed. In other words, this is the best, simplest map of world religions ever. Some quick takeaways:
- Christianity (blue) dominates in the Americas, Europe and the southern half of Africa.
- Islam (green) is the top religion in a string of countries from northern Africa through the Middle East to Indonesia.
- India stands out as a huge Hindu bloc (dark orange).
- Buddhism (light orange) is the majority religion in South East Asia and Japan
- China is the country with the world's largest 'atheist/agnostic' population (grey) as well as worshippers of 'other' religions (yellow).
The Americas are (mostly) solidly Christian
Which is the least Christian country in the Americas? The answer may surprise you.
Credit: Carrie Osgood
But the map – based on figures from the World Religion Database (behind a paywall) – also allows for some more detailed observations.
- Yes, the United States is majority Christian, but the atheist/agnostic share of its population alone is bigger than the total population of most other countries, in the Americas and elsewhere. Uruguay has the highest share of atheists/agnostics in the Americas. Other countries with a lot of 'grey' in their pies include Canada, Cuba, Argentina and Chile.
- All belief systems represented on the scale below are present in the US and Canada. Most other countries in the Americas are more mono-religiously Christian, with 'other' (often syncretic folk religions such as Candomblé in Brazil or Santería in Cuba) the only main alternative.
- Guyana, Suriname and Trinidad & Tobago are the only American nations with significant shares of Hindus, as well as the largest share of Muslim populations – and consequently have the lowest share of Christians in the Americas (just under half in the case of Suriname).
Lots of grey area in Europe
The second-biggest religious affiliation in Europe isn't Islam, but 'none'.
Credit: Carrie Osgood
- Christianity is still the biggest belief system in most European countries, but the atheist/agnostic share is strong in many places, mainly in Western Europe, but especially in the Czech Republic, where it is close to half the total.
- Islam represents a significant slice (and a large absolute number) in France, Germany and the UK, and is stronger in the Balkans: The majority in Albania, almost half in Bosnia and around a quarter in Serbia (although that probably indicates the de facto independent province of Kosovo).
Islam in the north, Christianity in the south
The map of Africa and is dominated by the world's two largest religions
Credit: Carrie Osgood
- Israel is the world's only majority-Jewish state (75%, with 18% Muslim). The West Bank, shown separate, also has a significant Jewish presence (20%, with 80% Muslim). Counted as one country, the Jewish majority would drop to around 55%.
- Strictly Islamic Saudi Arabia, but also some of its neighbors in the Gulf, have significant non-Muslim populations – virtually all guest workers and ex-pats.
- Nigeria, due to its large population and even split between Islam and Christianity, has more Muslims and more Christians than most other African nations.
Different majorities across Asia
Close neighbors India, Bangladesh and Myanmar each have a different majority religion.
Credit: Carrie Osgood
- Because countries are sized for population rather than area, some are much bigger or smaller than you'd expect – with some interesting results: There are more Christians in Muslim-majority Indonesia than there are in mainly Christian Australia, for example.
- Hindus are a minority everywhere outside India, except in Nepal.
- North Korea is shown as three-quarters atheist/agnostic, but this is debatable, on two counts. In what is often referred to as the last Stalinist state on Earth, religious adherence is probably underreported. And the state-sponsored ideology of 'Juche', although in essence based on materialism, makes some supernatural claims. For instance: despite having died in 1994, Kim Il-sung was declared 'president for eternity' in 1998.
And then there's the whole minefield of nuance between those who practice a religion (but may do so out of social coercion rather than personally held belief), and those who believe in something (but don't participate in the rituals of any particular faith). To be fair, that requires more nuance than even a great map like this can probably provide.
Strange Maps #967
Got a strange map? Let me know at firstname.lastname@example.org.
*: Definitions matter, but definitions vary. The ones above, equating 'atheism' with a rejection of the belief in god and 'agnosticism' as the mere doubting of his existence, may be common, but not necessarily precise. Merriam-Webster defines atheism as "a lack of belief or a strong disbelief in the existence of a god or any gods". Many in the atheist community subscribe to this definition, which avoids any specific claims to truth (such as "there is no god").
As one reader clarifies, the difference between 'knowing' there is no god and 'not knowing' there is no god can be expressed by the adjectives 'gnostic' and 'agnostic' (both from the Greek root 'gnosis', i.e. 'knowledge'): "A gnostic atheist is making a truth claim that there is no god and does not believe in a god; an agnostic atheist says there is no proof either way and does not believe in a god. They are both atheists because they both hold the position that they don't believe in any god(s)."
Another reader offers a slightly different take: "The misunderstanding of what the word ('atheist') means to people who actively call themselves (thus) is at the root of a lot of the arguments between believers and non-believers. 'Agnosticism' is the opposite of 'gnosticism', the knowledge of the existence of gods. Most atheists are agnostics, I myself would say I'm an agnostic atheist. As opposed to most believers who would be either gnostic theists or agnostic theists."
- Is religion dying? - Big Think ›
- China and Europe stand out on world map of atheism ›
- Stunning dot density map shows London's religious clusters - Big ... ›
Scientists are using bioelectronic medicine to treat inflammatory diseases, an approach that capitalizes on the ancient "hardwiring" of the nervous system.
- Bioelectronic medicine is an emerging field that focuses on manipulating the nervous system to treat diseases.
- Clinical studies show that using electronic devices to stimulate the vagus nerve is effective at treating inflammatory diseases like rheumatoid arthritis.
- Although it's not yet approved by the US Food and Drug Administration, vagus nerve stimulation may also prove effective at treating other diseases like cancer, diabetes and depression.
The nervous system’s ancient reflexes<p>You accidentally place your hand on a hot stove. Almost instantaneously, your hand withdraws.</p><p>What triggered your hand to move? The answer is <em>not</em> that you consciously decided the stove was hot and you should move your hand. Rather, it was a reflex: Skin receptors on your hand sent nerve impulses to the spinal cord, which ultimately sent back motor neurons that caused your hand to move away. This all occurred before your "conscious brain" realized what happened.</p><p>Similarly, the nervous system has reflexes that protect individual cells in the body.</p><p>"The nervous system evolved because we need to respond to stimuli in the environment," said Dr. Tracey. "Neural signals don't come from the brain down first. Instead, when something happens in the environment, our peripheral nervous system senses it and sends a signal to the central nervous system, which comprises the brain and spinal cord. And then the nervous system responds to correct the problem."</p><p>So, what if scientists could "hack" into the nervous system, manipulating the electrical activity in the nervous system to control molecular processes and produce desirable outcomes? That's the chief goal of bioelectronic medicine.</p><p>"There are billions of neurons in the body that interact with almost every cell in the body, and at each of those nerve endings, molecular signals control molecular mechanisms that can be defined and mapped, and potentially put under control," Dr. Tracey said in a <a href="https://www.youtube.com/watch?v=AJH9KsMKi5M" target="_blank">TED Talk</a>.</p><p>"Many of these mechanisms are also involved in important diseases, like cancer, Alzheimer's, diabetes, hypertension and shock. It's very plausible that finding neural signals to control those mechanisms will hold promises for devices replacing some of today's medication for those diseases."</p><p>How can scientists hack the nervous system? For years, researchers in the field of bioelectronic medicine have zeroed in on the longest cranial nerve in the body: the vagus nerve.</p>
The vagus nerve<img type="lazy-image" data-runner-src="https://assets.rebelmouse.io/eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJpbWFnZSI6Imh0dHBzOi8vYXNzZXRzLnJibC5tcy8yNTYyOTM5OC9vcmlnaW4uanBnIiwiZXhwaXJlc19hdCI6MTY0NTIwNzk0NX0.UCy-3UNpomb3DQZMhyOw_SQG4ThwACXW_rMnc9mLAe8/img.jpg?width=1245&coordinates=0%2C0%2C0%2C0&height=700" id="09add" class="rm-shortcode" data-rm-shortcode-id="f38dbfbbfe470ad85a3b023dd5083557" data-rm-shortcode-name="rebelmouse-image" data-width="1245" data-height="700" />
Electrical signals, seen here in a synapse, travel along the vagus nerve to trigger an inflammatory response.
Credit: Adobe Stock via solvod<p>The vagus nerve ("vagus" meaning "wandering" in Latin) comprises two nerve branches that stretch from the brainstem down to the chest and abdomen, where nerve fibers connect to organs. Electrical signals constantly travel up and down the vagus nerve, facilitating communication between the brain and other parts of the body.</p><p>One aspect of this back-and-forth communication is inflammation. When the immune system detects injury or attack, it automatically triggers an inflammatory response, which helps heal injuries and fend off invaders. But when not deployed properly, inflammation can become excessive, exacerbating the original problem and potentially contributing to diseases.</p><p>In 2002, Dr. Tracey and his colleagues discovered that the nervous system plays a key role in monitoring and modifying inflammation. This occurs through a process called the <a href="https://www.nature.com/articles/nature01321" target="_blank" rel="noopener noreferrer">inflammatory reflex</a>. In simple terms, it works like this: When the nervous system detects inflammatory stimuli, it reflexively (and subconsciously) deploys electrical signals through the vagus nerve that trigger anti-inflammatory molecular processes.</p><p>In rodent experiments, Dr. Tracey and his colleagues observed that electrical signals traveling through the vagus nerve control TNF, a protein that, in excess, causes inflammation. These electrical signals travel through the vagus nerve to the spleen. There, electrical signals are converted to chemical signals, triggering a molecular process that ultimately makes TNF, which exacerbates conditions like rheumatoid arthritis.</p><p>The incredible chain reaction of the inflammatory reflex was observed by Dr. Tracey and his colleagues in greater detail through rodent experiments. When inflammatory stimuli are detected, the nervous system sends electrical signals that travel through the vagus nerve to the spleen. There, the electrical signals are converted to chemical signals, which trigger the spleen to create a white blood cell called a T cell, which then creates a neurotransmitter called acetylcholine. The acetylcholine interacts with macrophages, which are a specific type of white blood cell that creates TNF, a protein that, in excess, causes inflammation. At that point, the acetylcholine triggers the macrophages to stop overproducing TNF – or inflammation.</p><p>Experiments showed that when a specific part of the body is inflamed, specific fibers within the vagus nerve start firing. Dr. Tracey and his colleagues were able to map these relationships. More importantly, they were able to stimulate specific parts of the vagus nerve to "shut off" inflammation.</p><p>What's more, clinical trials show that vagus nerve stimulation not only "shuts off" inflammation, but also triggers the production of cells that promote healing.</p><p>"In animal experiments, we understand how this works," Dr. Tracey said. "And now we have clinical trials showing that the human response is what's predicted by the lab experiments. Many scientific thresholds have been crossed in the clinic and the lab. We're literally at the point of regulatory steps and stages, and then marketing and distribution before this idea takes off."<br></p>
The future of bioelectronic medicine<img type="lazy-image" data-runner-src="https://assets.rebelmouse.io/eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJpbWFnZSI6Imh0dHBzOi8vYXNzZXRzLnJibC5tcy8yNTYxMDYxMy9vcmlnaW4uanBnIiwiZXhwaXJlc19hdCI6MTYzNjQwOTExNH0.uBY1TnEs_kv9Dal7zmA_i9L7T0wnIuf9gGtdRXcNNxo/img.jpg?width=980" id="8b5b2" class="rm-shortcode" data-rm-shortcode-id="c005e615e5f23c2817483862354d2cc4" data-rm-shortcode-name="rebelmouse-image" data-width="2000" data-height="1125" />
Vagus nerve stimulation can already treat Crohn's disease and other inflammatory diseases. In the future, it may also be used to treat cancer, diabetes, and depression.
Credit: Adobe Stock via Maridav<p>Vagus nerve stimulation is currently awaiting approval by the US Food and Drug Administration, but so far, it's proven safe and effective in clinical trials on humans. Dr. Tracey said vagus nerve stimulation could become a common treatment for a wide range of diseases, including cancer, Alzheimer's, diabetes, hypertension, shock, depression and diabetes.</p><p>"To the extent that inflammation is the problem in the disease, then stopping inflammation or suppressing the inflammation with vagus nerve stimulation or bioelectronic approaches will be beneficial and therapeutic," he said.</p><p>Receiving vagus nerve stimulation would require having an electronic device, about the size of lima bean, surgically implanted in your neck during a 30-minute procedure. A couple of weeks later, you'd visit, say, your rheumatologist, who would activate the device and determine the right dosage. The stimulation would take a few minutes each day, and it'd likely be unnoticeable.</p><p>But the most revolutionary aspect of bioelectronic medicine, according to Dr. Tracey, is that approaches like vagus nerve stimulation wouldn't come with harmful and potentially deadly side effects, as many pharmaceutical drugs currently do.</p><p>"A device on a nerve is not going to have systemic side effects on the body like taking a steroid does," Dr. Tracey said. "It's a powerful concept that, frankly, scientists are quite accepting of—it's actually quite amazing. But the idea of adopting this into practice is going to take another 10 or 20 years, because it's hard for physicians, who've spent their lives writing prescriptions for pills or injections, that a computer chip can replace the drug."</p><p>But patients could also play a role in advancing bioelectronic medicine.</p><p>"There's a huge demand in this patient cohort for something better than they're taking now," Dr. Tracey said. "Patients don't want to take a drug with a black-box warning, costs $100,000 a year and works half the time."</p><p>Michael Dowling, president and CEO of Northwell Health, elaborated:</p><p>"Why would patients pursue a drug regimen when they could opt for a few electronic pulses? Is it possible that treatments like this, pulses through electronic devices, could replace some drugs in the coming years as preferred treatments? Tracey believes it is, and that is perhaps why the pharmaceutical industry closely follows his work."</p><p>Over the long term, bioelectronic approaches are unlikely to completely replace pharmaceutical drugs, but they could replace many, or at least be used as supplemental treatments.</p><p>Dr. Tracey is optimistic about the future of the field.</p><p>"It's going to spawn a huge new industry that will rival the pharmaceutical industry in the next 50 years," he said. "This is no longer just a startup industry. [...] It's going to be very interesting to see the explosive growth that's going to occur."</p>
The first rule of Vulture Club: stay out of Portugal.
So you're a vulture, riding the thermals that rise up over Iberia. Your way of life is ancient, ruled by needs and instincts that are way older than the human civilization that has overtaken the peninsula below, and the entire planet.
"The Expanse" is the best vision I've ever seen of a space-faring future that may be just a few generations away.
- Want three reasons why that headline is justified? Characters and acting, universe building, and science.
- For those who don't know, "The Expanse" is a series that's run on SyFy and Amazon Prime set about 200 years in the future in a mostly settled solar system with three waring factions: Earth, Mars, and Belters.
- No other show I know of manages to use real science so adeptly in the service of its story and its grand universe building.
Credit: "The Expanse" / Syfy<p>Now, I get it if you don't agree with me. I love "Star Trek" and I thought "Battlestar Galactica" (the new one) was amazing and I do adore "The Mandalorian". They are all fun and important and worth watching and thinking about. And maybe you love them more than anything else. But when you sum up the acting, the universe building, and the use of real science where it matters, I think nothing can beat "The Expanse". And with a <a href="https://www.rottentomatoes.com/tv/the_expanse" target="_blank">Rotten Tomato</a> average rating of 93%, I'm clearly not the only one who feels this way.</p><p>Best.</p><p>Show.</p><p>Ever. </p>
Contrary to what some might think, the brain is a very plastic organ.
As with many other physicians, recommending physical activity to patients was just a doctor chore for me – until a few years ago. That was because I myself was not very active.