Create a site to support filing lawsuits on behalf of future generations.
This solution can be used in a variety of ways and against a variety of issues. Essentially it boils down to suing for restorative justice against people and groups that are unsustainably exploiting resources or denying benefits to future generations through their actions in society or in degrading the environment.
In this case future generations include children who are currently alive but not yet considered adults as they will inherit the world from adult management.
Most specifically the Universal Declaration of Rights can be used as evidence against those who are affecting those rights in the future through their actions now.
A website with supporting information based on the MediaWiki software could be created to accumulate information in support of doing this in every country on earth.