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

The 52:52:52 project, launching both on this site and on Twitter at the beginning of 2023 will help you address 52 issues with 52 responses over 52 weeks.

A Mundane Comedy will be Dominic Kelleher's new book, published in early 2023. Extracts will appear on this site and on my social media accounts the final quarter of 2022. Please get in touch with any questions or thoughts.

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