August 30, 2024
Generative AI is a type of artificial intelligence that can create various media, including text, images, and music. It learns from existing data to generate novel outputs. Examples include language models like GPT-4 and Claude, which can write essays or answer questions, and image generation models like Midjourney and DALL·E, which can create artwork based on textual descriptions.
In 2023, funding for generative AI soared to $22.4 billion, nearly nine times more than in 2022 and about 25 times the amount from 2019. This surge occurred despite overall investment in AI declining since its 2021 peak.
The data is produced by Quid and made available through the AI Index Report. Quid analyzes investment data from over 8 million companies, using natural language processing to uncover patterns and insights from vast datasets. We have recently updated our charts on Our World in Data with the report's latest edition.
Read more on how investment in AI has been changing over time here →
Today
In 2008, Bhutan started measuring the “Gross Happiness Index” as an official metric to track the well-being of its population. As a result, it’s often coined the “Land” or “Kingdom of Happiness”.
Bhutan tracks gross happiness with in-depth surveys, which other countries do not. How does it compare across similar metrics where we can make these comparisons? Despite its reputation, it’s actually not an outlier.
Self-reported life satisfaction is one internationally comparable metric measured in the annual World Happiness Report. Respondents in every country are asked to rate their lives based on a 10-step ladder, where 0 represents the worst possible life, and 10 is the best.
Self-reported life satisfaction tends to be higher in richer countries, although there is a spread among countries with similar gross domestic product (GDP) per capita. The chart plots one against the other.
For its income level, Bhutan has a fairly average life satisfaction score; in the global comparison, it’s about as happy as we would expect based on the incomes of people in the country.
Explore more data on levels of happiness across the world →
Yesterday
For many decades, most children in Europe were born to mothers in their twenties. However, since the mid-1970s, there has been a steady increase in the number of women giving birth in their thirties.
As the chart shows, since 2015, women in their thirties have given birth to the greatest number of babies; in the same year, it became more common for a woman in her forties to give birth than for women in their teens.
Many factors are causing these changes, including women spending more years in education and developing their careers, easily accessible contraception, improvements in fertility treatment, and high childcare costs.
Explore what age women are having children in your country →
March 24
Antibiotics can play an important role in preventing disease and improving the health of animals. But overusing them, particularly for livestock, poses a risk to human health through antibiotic resistance.
Over the last decade, Europe has made much progress in reducing antibiotic use in farm animals. This has been achieved through stricter regulations and, in some countries, taxes on antibiotics.
The chart shows the change in sales of these antimicrobials for livestock between 2010 and 2022. It shows a range of European countries, with a few examples highlighted in bold.
Antibiotic use has fallen by over half in some countries, such as the UK, Italy, France, and the Netherlands.
These countries have still managed to maintain productive agricultural sectors by focusing on other ways to manage disease risk and animal growth, such as vaccinations, ventilation, cleaner equipment, and high-quality diets.
Read more about the differences in antibiotic use for livestock across the world →
March 21
January 2025 was the hottest January on record. This was surprising because the world recently transitioned from El Niño (which tends to increase global temperatures) to La Niña (which tends to cool them). We might have expected this cooling to be reflected in January’s temperatures. It was not.
But February did not follow this same pattern.
The chart tracks monthly temperature anomalies, comparing current temperatures to historical averages. Each dot represents a February anomaly, with El Niño (warmer) years in orange and red and La Niña (cooler) years in blue.
As expected, February 2025 cooled compared to February 2024, following the usual pattern where La Niña years tend to be cooler than the El Niño years before them.
However, this doesn’t mean global warming has slowed. Recent La Niña years are still warmer than El Niño years from just a few decades ago, showing that even natural climate fluctuations don’t reverse the long-term warming trend.
We update this data monthly so you can track how these patterns evolve.
Read our recent article that explains in more detail how the world is warming despite natural fluctuations from the El Niño cycle →
March 20
In every country in the world, women live longer than men — but the size of this gap in life expectancy varies widely.
The difference is striking in some countries, like Russia and Ukraine, where women’s life expectancy is over 10 years longer. Their gaps have been wide due to higher death rates in young and middle-aged men — often due to alcohol use, smoking, and other risks. The war in Ukraine has widened this gap further, as men face high mortality from conflict.
The gap is much smaller in other countries, including in West Africa and South Asia. There are likely multiple reasons for this, including higher rates of maternal mortality and HIV among women. Just a few decades ago, Bangladesh and India had shorter female than male life expectancies due to higher rates of female infanticide and neglect in childhood, and the gap in lifespans in these countries is still relatively small.
Many factors affect life expectancy, and the sex gap in lifespans has varied widely across countries and over time.
You can read more in my article about why women live longer than men →
March 19
The world's population has more than doubled over the last 60 years, but global food production has managed to keep up.
The chart shows the change in four indicators since 1961: cereal production, cereal yields, land use for cereals, and population. Each metric is expressed in its relative change since 1961 (which is given a value of zero).
Cereal production has increased by 3.5-fold, more than the 2.6-fold growth in population. That means production has grown faster than the population, and the world produces more cereal per person than 60 years ago.
We can also see what has driven this increase. You can grow more food by either increasing crop yields or using more land. While land use has increased, most of this growth has come from higher crop yields. This has spared some natural habitats from being converted into farmland.
Read more in my article on the Green Revolution and food production →
March 18
Putting a number on “happiness” is hard. But one way to better understand how satisfied people are with their lives is to ask them.
Self-reported life satisfaction is one key metric that researchers rely on. Respondents are asked to rate their lives on a 10-step ladder, where 0 represents the worst possible life, and 10 is the best.
The chart shows self-reported life satisfaction measured against gross domestic product (GDP) per capita. The two are positively correlated: people in richer countries tend to be more satisfied with their lives.
Of course, income is not the only thing that matters. You can also see the large spread of values for countries with similar levels of GDP per capita. For example, South American countries tend to have higher happiness levels than those in other regions.
Explore more data on life satisfaction across countries, within countries, and over people’s lifespan →
