The idea of WeForest came to Bill Liao in 2008 out of a thorough search for scientific evidence : Bill wanted to find a simple solution to the urgent issue of global warming. Marie-Noëlle Keijzer met Bill in 2009 and they decided to transform this idea into an NGO. WeForest has overtime developed a unique capacity to mobilize companies (ranging from start ups to large multinationals) to engage their employees and millions of consumers in restoring the world’s forests.