Not only did they help Watsons Water convert their plastic water bottles from zero percent recycled content to 100 percent recycled content, they were also the recycling partner for the Rugby 7s in 2014 and founders of the global Plasticity Forum that is attended by industry leaders around the world.

Founded by Doug Woodring, who was awarded the Prince's Prize for Innovative Philanthropy from Prince Albert of Monaco for his efforts, Ocean Recovery Alliance creates business opportunities for local communities to help improve the ocean environment.

The platform engages media outlets and celebrities to spread its message. The social enterprise also frequently runs fundraisers, from mountain climbs and walks to gala dinners and art exhibitions, donating the proceeds to environmental charities such as the Nature Conservancy, the International Anti-Poaching Foundation and the Big Life Foundation.

Founded by award-winning TV producer and Tatler 500 lister Sean Lee-Davies in 2010, Project C:Change is a social enterprise and media platform that raises awareness about environmental issues such as climate change and conservation, and empowers local communities to protect their own natural resources.

The Nature Conservancy was originally the research-oriented Ecological Society of America, established in 1915. Recognising the need to preserve forests, rivers, the marine environment and other ecosystems, the organisation reformed as a non-profit in 1951. It has since expanded to 72 countries around the world, protecting millions of hectares of forests and thousands of kilometres of rivers.

As when it first began, however, the organisation’s approach is firmly rooted in science and collaboration. In addition to protecting land and water, it also prioritises tackling climate change, building healthy cities and sustainably supplying food and water.

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(Editor's note: This is by no means an exhaustive list of Hong Kong charities that save the environment. If you would like to have your charity featured, please send us an email.)

See also: 50 Hong Kong Charities To Support

This article was originally published on 18 February 2019 and was updated on 21 April 2020.