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Part consultancy, part thinktank, part social enterprise, Halcyon helps you prepare for and respond to personal, organisational and societal change.

Halcyon's 52:52:52 campaign on Twitter will help you address 52 issues with 52 responses over 52 weeks.

To be a catalyst is the ambition most appropriate for those who see the world as being in constant change, and who, without thinking that they control it, wish to influence its direction - Theodore Zeldin

A Mundane Comedy is Dominic Kelleher's new book, which will be published in early 2020. We will be publishing extracts on this site and across social media during the first quarter of 2020. Please feel free to contact us with any questions about the book.

Sustainable Development Goals

What's Changing? - Health
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Halcyon Impacts 1 January 2020


Please see below selected recent health-related change.


See also:


In figures:


November 2019

  • More than 13% of US adults, some 34 million people, have reported having a friend or family member who has died in the past five years because they couldn't afford medical treatment, according to a new Gallup poll.


October 2019

On the Sustainable Development Goals (SDGs)
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Halcyon In Kal… 1 June 2018
What's Happening? - SDG 7. Affordable and Clean Energy Halcyon Impacts 23 February 2017


Please visit this page regularly for significant developments concerning the United Nations Sustainable Development Goal goal seven (SDG 7) of ensuring affordable and clean energy by 2030.