Forest Day 4 was held in Cancun, Mexico with over 1500 participants. The theme was "Time to Act" with a sense of urgency to agree on REDD+ mechanisms to reduce deforestation and forest degradation. There was impatience that five years after Montreal and four years after the Stern Review, no agreement had been reached. Participants asserted that the science on climate change is clear and that failure to act would lead to dangerous climate change impacts. A majority saw monitoring co-benefits of REDD+ as very important and supported mainstreaming sustainable forest management into agriculture, water and energy sector policies.