Hollywood star turned activist Arnold Schwarzenegger joined politicians and legal experts in Paris Saturday to launch a campaign for a global pact to protect the human right to a clean, healthy environment. "Less talk, more action," urged former French prime minister Francais Laurent Fabius, who also presided over the 2015 Paris COP 21 conference on climate change. Seeking to underline the urgency of the need to act, Fabius borrowed the turn of phrase from ex-California governor-turned climate campaigner Schwarzenegger, who joined the gathering, as did former UN chief Ban Ki-moon.