The disparity in life expectancy between wealthy and impoverished nations has notably narrowed

Global life expectancy has more than doubled since the 1850s

The human species experienced a dramatic increase in expected lifespan over the past 150 years. Antibiotics, improved sanitation, and better worldwide food distribution are a few factors contributing to this rapid transformation. Use this interactive resource to explore longevity gains over time and compare these improvements across the globe.

How global conditions have improved over 200 years

In an era of 24-hour news, it can feel as if the world is on a perpetual downward spiral. This set of visualizations zoom out, and show how global living conditions have improved in recent centuries. The percentage of people living in extreme...

Roughly 10% of the world's population is older than 65 (2023 data)

With recent advances in medicine, sanitation, and nutrition, expected lifespans have rapidly risen around the globe—resulting in a rapidly aging global population. The worldwide distribution has seen a nearly 600% jump in the population of people aged 65 and older.

Monaco has the world's oldest population, with more than 36% of residents aged 65 or older, according to World Bank data.

How life ranks in South Korea

As South Korea developed over the last half of the 20th century, quality of life soared. The country now outperforms the world average when it comes to education, health, and civic engagement, according to the OECD’s Better Life Index. In this dashboard, you can see where South Korea ranks in terms of housing, jobs, income, and more, and compare it against other developed countries.

Many countries, like Iceland and Norway, offer pensions to elderly citizens

Iceland, Luxembourg, and Norway offer some of the highest annual pension payouts at over 30,000 euros. The below chart shows how European nations stack up in terms of which offer the highest annual pension payouts.

In 2026, Finland was named the world's happiest country for the ninth consecutive year

Analysts attribute Finland's joy factor to its wealth, social safety network, and high life expectancy, among factors. The results were based on answers from roughly 100,000 people in 140 countries and territories. Respondents were asked to rank their life satisfaction on a scale of 0 to 10. Finnish respondents gave an average life satisfaction score of 7.7; Afghans answered 1.4. The US, in 23rd place, reported an average score of 6.8.

Extending the worldwide lifespan by one healthy year is worth $38T

This econometric study attempts to estimate the economic value of increasing the global healthy lifespan by one year—and to answer the question of whether it is better to extend lifespans or slow the rate of healthy aging.

The average retirement age by country, visualized

In the US, the average retirement age was 64 as of 2020. The Organization for Economic Co-operation and Development projects a two-year increase in the average retirement age by the mid-2060s.

Child mortality rates since ancient Rome

One of the great achievements of modern humanity has been the sea change in child mortality rates—the chance that a newborn eventually lives past puberty. For thousands of years, children had a 50% chance of not entering adulthood. About 300 years...

Visualizing cause of death over time in America

As people age, their life expectancy decreases, but the timing and speed of this decline have evolved over the years. Check out this chart which shows the shift in various causes of death of Americans over the last few decades. Data from the...

Why the US can’t end poverty

Despite being among the wealthiest nations in the world in terms of GDP, the US has a major poverty issue, with more than 37 million Americans living in poverty as of 2023. Part of the issue is that the standards by which the US measures poverty are outdated: The official poverty measure in the US today is based on calculations from the 1960s. Find out more in this video.

Under-5 child mortality has been cut in half since 2000, UNICEF reports

The United Nations Children's Fund works globally to protect children's rights and well-being. Its 2024 report on child mortality reveals that under-5 deaths have halved since 2000. The report includes interactive data visualizations that can be sorted by year or topic.

Why Hawaiians live longer

Hawaii has the longest life expectancy at birth out of all 50 states, according to the US Centers for Disease Control and Prevention. Key factors include strong healthcare, lots of sunlight, and active lifestyles.

In the original 2004 blue zones study, which sought to verify the ages of long-lived, healthy populations in Sardinia, Italy, researchers hypothesized that inbreeding in these isolated communities may have helped promote their longevity.

Environment and genetics explain why animals have widely different lifespans

Both environmental conditions and genetic factors shape how long various animals live. For some creatures, colder conditions allow for less energy use and slower aging. Larger animals have fewer predators. While humans don't live the longest, we are a rare species that successfully lengthened its average lifespan over time.

Most self-reported claims of exceptional longevity are exaggerated, but read how demographers verify age claims and why some of the original blue zone demographers say blue zone regions are real and worth studying.

In 2023, Native Americans had the lowest life expectancy at birth among all racial and ethnic groups

Native Americans and Alaska Natives face significant health disparities linked to chronic underinvestment in reservation health infrastructure, poverty, and multigenerational psychological harm—often called historical or inherited trauma.

The countries with the highest wealth per person, ranked

When looking at countries with the highest average wealth per person, the United States comes in at number three (with $564,862 per person). But the US doesn't even make the top 10 when looking at the median wealth per person rather than the average, which is perhaps a more accurate version of the data. Explore the numbers here.

One biologist is leading the blue zone criticisms—both questioning the original recordkeeping for these purported longevity-prone locations and pointing to recent research showing declining numbers of healthy seniors in several official blue zone regions.

See how income levels have changed in each state since 2010

Since 2010, the median household income has increased by 22% on average. Montana, the state with the largest growth rate, saw a 42.9% increase, while New Mexico saw the lowest income growth rate at 2.3%.

Health span: The number of years one is active and disease-free

As scientific advances continue to extend the average human lifespan, many are now turning their attention toward extending "health span." The ultimate goal would be to extend one's health span to match one's lifespan, which would necessitate a shift in focus toward the pursuit of healthy aging. (Some users may experience a paywall.)

Marriage rates are declining, especially in the richest countries

89% of the world’s population now live in countries with falling rates. Increasing costs of living, the financial burden of starting a family, and the rise of secularism are some of the key factors reducing marriage rates among the less affluent.

Doctors shift focus from extending lifespan to lengthening health span

As scientific advances extend the average human lifespan, many are turning their attention toward extending "health span." Health span refers to the number of years one is active and disease-free. The ultimate goal is to extend one’s health span to match one’s lifespan.

Obesity rates have more than doubled worldwide since 1990

In the US alone, the percentage of the population meeting the clinical standard of obesity rose from less than 20% to more than 40% over the past three decades. This rise has been matched by many countries across the globe, from industrialized to developing nations.

Visit these 'blue zones,' where people live the longest

Blue zones, a term coined in 2004 by National Geographic Fellow Dan Buettner, are regions in the world where people live the longest and healthiest lives. Researchers have identified a few key aspects defining the culture of these areas—physical activity, diet, purpose-driven lives, and more. Explore the top five blue zones from across the world here.

Explore US public health data

This resource tracks key US health metrics, including mortality causes, child survival rates, and life expectancy comparisons, to inform future health improvements, with regularly updated global estimates.

A report on social well-being around the world

This extensive report provides quantitative evidence on social well-being trends for 36 countries. Data cover demography and family characteristics, employment and wealth, mobility and housing, health status, social expenditure, subjective...

Why some nations reach economic success and others don’t

The 2024 Nobel Prize in Economics winners, Daron Acemoglu, Simon Johnson, and James A. Robinson, were honored for their compelling research on the factors that influence a nation’s prosperity. Spanning two decades, their work presents insights into how societal organization can explain the income discrepancies between different countries. In general, their research shows that economic success favors more free and open societies. Listen for more fascinating insights.

Lung cancer advances are making a big difference

Lung cancer deaths are declining faster than new cases due to advances in treatment. The progress illustrates what is possible, even for a cancer that has long had a poor prognosis.

The world's 10 best places to live

The Economist Intelligence Unit's Global Liveability Index ranked 173 cities based on stability, healthcare, culture and environment, education, and infrastructure. The report shows an overall increase in livability scores compared to previous...

See which countries have already reached their peak population, and when others will eventually reach theirs.

Each part of the human body experiences aging differently

With global average life expectancy cresting at 73 years, understanding how the body ages is imperative to effective medical treatment and maintaining a desired quality of life. This 13-minute video dives into how the body and its organs age "from head to toe."

Blue zones are regions with unusually high numbers of centenarians

Factors thought to contribute to longevity in these regions include diet and social connections, but their legitimacy is often questioned due to a lack of rigorous scientific methodology and potential record inaccuracies.

South Koreans grew roughly 7 inches in a century on average

A hundred years ago, the average Korean woman was only 4’7”. Today, she stands nearly eight inches taller than her great-grandmother did, the largest jump of any country on earth. This video from Vox tries to explain why. Turns out, South Korea’s increasing postwar quality of life gave its people a (literal) leg up.

The number of billionaires in Saudi Arabia is projected to increase by 183% by 2031

Countries in the Middle East and Asia are projected to have some of the largest economic expansions by 2031, including within their billionaire populations. The global average growth projection for billionaires is 26% between 2026 and 2031.

Most Americans are now dying at home, reversing 20th century trends

For most of the 21st and 20th centuries most Americans died in hospital settings. But in 2016, home-based deaths overtook hospitals; most Americans are now dying at home, likely fueled by individual preferences to die at home or to receive at-home palliative care.

Pre-revolution Cuba was prosperous—and deeply unequal.

Poverty rates by US state

As of 2022, 37.9 million people in the US were living in poverty. But those people aren't evenly distributed among the 50 states. Some states and regions of the country are more impoverished than others. For instance, US poverty rates are relatively higher in the South than they are in the North. See the state-by-state breakdown with this map.

Roughly 75% of Americans report feeling okay financially

Since 2022, fewer Americans report feeling worse off financially, moving from 35% in 2022 to 28% in 2025. Likewise, the number of Americans who reported feeling better about the economy is up 4% from 2022. More than 90% of Americans cite price increases as their biggest financial concern.

Helping support others in older age linked to longer life

Analysis of findings from a long-term study of older couples first interviewed in 1987 and then followed for the next five years found that individuals who lend support to friends, neighbors, and relatives live longer. Non-helpers were more than twice as likely to die as helpers during the five-year period. That's even after controlling for factors including age, gender, and physical and mental health.

Inflammaging appears to differ across global populations

Chronic, low-grade inflammation linked to aging is a byproduct of our industrialized lifestyles, according to recent research. The work compared two industrialized populations with two Indigenous, non-industrialized populations in Bolivia and Malaysia, and found that inflammation levels in the Indigenous groups—unlike the industrialized ones—did not seem to differ by age.

Mapping projected food inflation across the world in 2026

Iran tops the list of hardest-hit countries with a projected 56% inflation on food prices in 2026, followed by Argentina (33%) and Turkey (25%). In the opposite direction is Niger, whose food inflation is expected to drop 18% as a result of strong harvests and financial stabilization. The global average of food inflation is expected to be 3%.

There may be 500,000 additional malaria deaths by 2050 according to peer-reviewed research published in 2026.

At $159K, Luxembourg has the world's highest GDP per capita (also known as GDP per person) as of June 2026.

Massachusetts is the state with the highest median household income for young Americans at $123.2K per year

Americans ages 25 through 44 make more in some states than others. While Massachusetts took the top billing, Mississippi came in last place out of all 50 states at $66K per year—a roughly 87% difference. However, it's important to remember that the cost of living in many of the highest-earning states in the US is significantly higher than the cost of living in the lowest-earning states.

The world's most (and least) corrupt countries

The annual index measuring every country's relative levels of corruption. In 2022, Denmark earned the top spot for transparency, with Sudan, Syria, and Somalia identified as having the highest levels of corruption in the public sector. The rankings...

The best countries for work-life balance, ranked

New Zealand is number one, with universal healthcare and 26 weeks of paid maternity leave.

Americans are retiring later than they used to

A Gallup poll from 2022 found that the percentage of adults between the ages of 55 and 74 who are retired is declining.

South Korea has the lowest fertility rate in the world

If current birthing trends persist, every hundred South Koreans today will have only six great-grandchildren between them. This crisis is a result of high expenses, harsh work-family trade-offs for women, declining marriage rates, and other societal factors. Some newer policies are helping to build incentives for having children, but larger issues also need to be addressed.