The ambition of the 2015 Paris Agreement of the 21st Conference of the Parties of the United Nations Framework Convention on Climate Change took the world by surprise. The largest emitters, the United States and China, have already signed up to the agreement, which sets the goal of limiting global warming to 'well below' two degrees, with an aim possibly as low as 1.5 degrees Celsius. A conference hosted by the University of Oxford’s Environmental Change Institute (ECI), attended by over 200 scientists, policymakers and business people, will assess its implications, looking particularly at how this goal could be achieved. The three-day conference, which launches at 5pm today, will coincide with a new website showing the current level of human-induced climate change, to track progress over coming decades in limiting warming to 1.5°C. Findings from this major meeting of scientists will contribute to a Special Report on 1.5 degrees that the Intergovernmental Panel on Climate Change (IPCC) will produce in 2018.