Maps by NOAA, based on data from NOAA NCEI. The three-day conference had about 140 science, government, NGO and private sector delegates, and included 35 oral presentations and 18 poster presentations. Less than two weeks ago, the small Siberian town of Verkhoyansk soared to 100.4 degrees Fahrenheit, appearing to break an all-time record for the Arctic and alarming meteorologists worldwide. A new study shows the Earth's climate would increase by 4 degrees Celsius, compared to pre-industrial levels, before the end of 21st century. This map shows how the impacts of climate change on one part of the world will affect countries in other parts of the world, particularly through the global trade in food. Trends in global surface temperature by decade for 1880–2017 (top map) compared to trends for 1988–2017 (bottom map), showing the rapid warming of the past 30 years. Climate Change's Uncertainty Principle. The 4 Degrees and Beyond International Climate Conference, subtitled Implications of a Global Climate Change of 4+ Degrees for People, Ecosystems and the Earth-system, was held 28–30 September 2009 at Oxford, United Kingdom. Scientists say they can never be sure exactly how extreme global warming might become, but that's no excuse for delaying action