An interesting graphic produced by World Visualized ranks the nations with the worst air quality, measured by average fine‑particulate (PM₂.₅) pollution.

According to the State of Social Protection Report 2025, a staggering 2 billion people across the globe remain uncovered or inadequately covered by any form of social protection—a stark reminder of the deep inequalities that still persist in the 21st century.

Finland now leads the world in Alzheimer's and dementia-related death rates, with 54.65 deaths per 100,000 people. The findings highlight a growing global health crisis as populations age and neurodegenerative diseases continue to rise sharply.

Despite the frequent headlines dominated by violence, pandemics, and disaster, the leading causes of death worldwide are far less dramatic, but far more persistent.

According to the United Nations, global life expectancy at birth has experienced significant changes across various regions. As of 2024, the average life expectancy at birth worldwide is 73.3 years, with females averaging 76.0 years and males 70.7 years. ​

Global life expectancy has changed remarkably over the past six decades, and projections indicate that it will continue to evolve through the end of the 21st century.

Cancer remains one of the leading causes of death worldwide, but some countries have notably lower cancer rates.

In the last few years of the global economic downturn, depression has become a significant health issue that affects millions of people worldwide.