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Halcyon actively monitors change covering more than 150 key elements of life.

A Mundane Comedy is Dom Kelleher's new book. Extracts will appear on this site and across social media from early 2022. Please get in touch with any questions or thoughts.

The 52:52:52 project, launching both on this site and on Twitter in early 2022 will help you address 52 issues with 52 responses over 52 weeks.

Population

What Counts? - Global Population Trends

Demographics

 

 

HOW GLOBAL POPULATIONS REACHED ITS CURRENT LEVEL

It took 200,000 years for our human population to reach 1 billion—and only 200 years to reach 7 billion. But growth has begun slowing, as women have fewer babies on average. When will our global population peak? And how can we minimize our impact on Earth’s resources, even as we approach 11 billion?

 

POPULATION GROWTH IS NOW DECLINING