Chris Jeffords was recently quoted and his research cited in this BBC on environmental human rights.
"...countries with the right to a healthy environmentor other environmental mandatesin their constitutions tend to have stronger environmental policies in general. They're also more likely to score better on metrics of sustainable development, according to studies by Jeffords. That said, he cautions that it's tricky to parse out cause and effectare the rights themselves are leading to these benefits, or are environmentally progressive countries simply more likely to adopt such rights?"