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What the data says about immigrants in the U.S.
As of June 2025, the country’s foreign-born population had shrunk by more than a million people, marking its first decline since the 1960s.
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H-1B visas and prevailing wage levels: A majority of H-1B employers—including major U.S. tech firms—use the program to pay migrant workers well below market wages
H-1B is a temporary nonimmigrant work visa that allows U.S. employers to hire college-educated migrant workers as well as fashion models from abroad; nearly 500,000 migrant workers are employed in the United States in H-1B status. The H-1B is an important—but deeply flawed—vehicle for attracting skilled workers to the…
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About One-in-Four U.S. Hispanics Have Heard of Latinx, but Just 3% Use It
The term Latinx has emerged in recent years as a gender-neutral alternative to the pan-ethnic terms Latino, Latina and Hispanic. However, awareness of Latinx is relatively low among the population it is meant to describe.
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What share of global CO₂ emissions come from aviation?
Aviation accounts for 2.5% of global CO₂ emissions. But it has contributed around 4% to global warming to date.
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Fact Sheet | Fossil Fuel Subsidies: A Closer Look at Tax Breaks and Societal Costs (2019) | White Papers
See our latest white papers on fossil fuel subsidies and fossil fuel externalities .
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Adversarial Interoperability
“Interoperability” is the act of making a new product or service work with an existing product or service: modern civilization depends on the standards and practices that allow you to put any dish into a dishwasher or any USB charger into any car’s cigarette lighter.But interoperability is just the...
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US Factory Farming Estimates
How many animals are factory farmed? We estimate that 99% of US farmed animals are living in factory farms at present. By species, we estimate that 74.9% of cows, 98.6% of pigs, 99.8% of turkeys, 98.3% of chickens raised for eggs, and over 99.9% of chickens raised for meat are living in factory farms. Based on the…
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Long COVID: Lasting effects of COVID-19
COVID-19 can have lasting symptoms that affect many parts of the body. Learn more about the symptoms and effects of long COVID.
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When and how to use masks
WHO's guidance and advice on the use of masks to protect against and limit the spread of COVID-19.
400
Coronavirus (COVID-19) Testing
Explore data on COVID-19 testing across the world.
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The top 10 causes of death
WHO act sheet on the 10 leading causes of death. In 2023, the 10 leading causes of death accounted for 33 million deaths, or 54% of the total 61 million deaths worldwide. The top global causes of death, in order of total number of lives lost, are associated with two broad topics: cardiovascular (ischaemic heart…
402
Two-Thirds of Americans Think Government Should Do More on Climate
There is bipartisan support for several proposals to reduce the effects of climate change, especially for large scale tree-plantings to help absorb carbon emissions and offering tax credits to businesses that capture carbon emissions.
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Environmental Impacts of Food Production
What are the environmental impacts of food production? How do we reduce the impacts of agriculture on the environment?
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You want to reduce the carbon footprint of your food? Focus on what you eat, not whether your food is local
“Eat local” is a common recommendation to reduce your diet's carbon footprint. How does the impact of what you eat compare to where it comes from?
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U.S. Public Views on Climate and Energy
A majority of U.S. adults say they are taking at least some specific action in their daily lives to protect the environment, though Democrats and Republicans remain at ideological odds over the causes of climate change and the effects of policies to address it.
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What are the safest and cleanest sources of energy?
Fossil fuels are the dirtiest and most dangerous energy sources, while nuclear and modern renewable energy sources are vastly safer and cleaner.
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How Congress Manufactured a Postal Crisis
An unprecedented congressional mandate threatens the Postal Service's ability to continue to provide good jobs and universal service.
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Most Americans say government has a responsibility to ensure health care coverage
Most Americans (66%) say the federal government has a responsibility to make sure all Americans have health care coverage.
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Mortality Risk of COVID-19
Explore data on the mortality risk of COVID-19 across the world.
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Mortality in the past: every second child died
The chances that a newborn survives childhood have increased from 50% to 96% globally. How do we know about the mortality of children in the past? And what can we learn from it for our future?
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CO₂ emissions
How much CO₂ does the world emit? Which countries emit the most?
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US Federal Agricultural Farm Subsidies: How Much Farmers Get By Year
Federal farm subsidies make up an average of 13.5% of net farm income.
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How has social mobility in the U.S. changed in recent decades?
Historic data suggests that the likelihood of outearning your parents has declined over recent decades - so is the American Dream becoming a nightmare?
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Can face masks protect against COVID-19?-How well do face masks protect against COVID-19?
Face masks can help slow the spread of coronavirus disease 2019 (COVID-19). Learn about mask types, which masks to use and how to use them.
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Sizing Up Twitter Users
Twitter users are younger, more likely to identify as Democrats, more highly educated and have higher incomes than U.S. adults overall.
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Obesity
When did obesity increase? How do rates vary across the world? What is the health impact?
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Narcissistic personality disorder
This mental disorder includes an unreasonably high sense of importance, a need for excessive admiration, fragile self-esteem, and troubled relationships.
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Coronavirus (COVID-19) Vaccinations
Explore data on COVID-19 vaccinations across the world.
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U.S. Health Care from a Global Perspective, 2019: Higher Spending, Worse Outcomes?
Americans are living shorter, unhealthier lives. Yet, the United States outspends other wealthy nations when it comes to health care, according to a new Commonwealth Fund report. This analysis compares the U.S. to 10 other high-income nations on spending, outcomes, risk factors, and quality.
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Meat and Dairy Production
Meat is an important source of nutrition for people around the world. How quickly is demand growing? And what are the implications for animal welfare and the earth’s environment?