How much have temperatures risen in countries across the world?
Explore country-by-country data on monthly temperature anomalies.
Latest:Our latest articles, updates and announcements
Weather forecasts have become much more accurate; we now need to make them available to everyone
A four-day forecast today is as accurate as a one-day forecast 30 years ago.Women have made major advances in politics — but the world is still far from equal
Women have gained the right to vote and sit in parliament almost everywhere. But they remain underrepresented, especially in the highest offices.We’re launching Data Insights
Discover our bite-sized format focused on one chart.Why is improving agricultural productivity crucial to ending global hunger and protecting the world’s wildlife?
A future in which humanity produces more food on less land is not inevitable, but possible.We’ve redesigned our homepage
Here’s what’s changed, what hasn’t, and some of the thinking behind the new design.Tracking global data on electric vehicles
Explore data on electric car sales and stocks worldwide.The world’s nuclear powers have more than 12,000 nuclear warheads
Nuclear weapons can kill millions directly and, through their impact on agriculture, likely have the potential to kill billions.The global fight against polio — how far have we come?
A generation ago, poliomyelitis paralyzed hundreds of thousands of children every year. Many countries have now eliminated the disease, and our generation has the chance to eradicate it entirely.Tuberculosis is still among the most common causes of death globally
Explore our new page on tuberculosis with global data and trends over time.Fossil fuels still dominate the global energy mix, but solar and wind are growing quickly
Explore global and national data on how energy systems are changing.Cardiovascular diseases are the most common cause of death worldwide
Explore global data on cardiovascular diseases, their treatments, risk factors, and trends over time.The world can respond swiftly and effectively to pandemic risks with better understanding, resources, and effort
Explore our new data and research on pandemics in history and how we can reduce their risk in the future.What were the death tolls from pandemics in history?
Pandemics have killed millions of people throughout history. How many deaths were caused by different pandemics, and how have researchers estimated their death tolls?Many countries are reducing CO₂ emissions, but global emissions have not yet peaked
Explore global and national data on greenhouse gas emissions and their drivers.Do governments worldwide have the ability to implement their policies and achieve their goals?
Explore research and data on state capacity.Life expectancy has increased across the world, but large differences remain
People are living longer around the world. Explore global data on life expectancy and how it has changed over time.Period versus cohort measures: what’s the difference?
What do the terms “period” and “cohort” mean in statistics? How do they differ, and why does it matter?Why do women live longer than men?
Women tend to live longer than men around the world – but the sex gap in life expectancy is not a constant.Child mortality has declined, but millions of children still die every year, many from preventable causes
Explore a major overhaul of our work on child and infant mortality.The Human Development Index and related indices: what they are and what we can learn from them
Researchers have developed several indices that aim to capture human development. How do they work?