According to World Wildlife Fund data, we are losing 12 to 15 million hectares (46,332 to 57,915 square miles) of the world's forests every year. Deforestation is a major contributor to climate change, as it accounts for 15 percent of all greenhouse gas emissions, besides killing biodiversity, depleting natural resources, compromising water sources, causing soil erosion and other environmental problems. Efforts to fight deforestation require fast information that could help authorities and NGOs take action before the worst damage is done. Global Forest Watch is a new initiative offering the possibility to do just that. It monitors deforestation activity across the globe, in near real time.