So of course one of the common questions that gets raised in any discussion about a free society is how exactly natural habitats would be preserved and environmental standards would be upheld without government enforcement. There's a list of resources on that here.
I recently came across the short film below showcasing a non-profit project called "One Percent for the Planet", which is basically a network of companies that give at least 1% sales to environmental causes of their choice, and the One Percent organization certifies they meet their 1% commitment.
The companies in turn are able to use the "1%" logo at their place of business and on their products.
The setup is obviously completely coercion-free, and kind of reminded me of Mozilla's Open Badges project.
This little film is a nice look into the One Percent network, showcasing just a few of the member companies and why those owners chose to be a part of it. It's a perfect illustration of how environmentalism could work in a free society, and a great link you can send to anyone who can't seem to fathom how the entire planet wouldn't be covered in concrete without the EPA.
I also thought we could use this thread as a repository for more such examples of free market environmentalism in today's world.