ClientEarth

ClientEarth is an NGO focusing on legal action to protect the environment and bring about systemic change. They work with partners, advice decision-makers on policy, and train legal and judicial professionals, "using the law to fight climate change, tackle pollution, defend wildlife and protect people and planet". ClientEarth is headquartered in London, with another eight offices in Berlin and other European cities, China and the U.S. Its team of over 200 people works in 50 different countries.