The Climate Impact Map is an online interactive map showing potential changes in regional temperature through the year 2100. The viewer shows forecasted temperature based on different development scenarios. It displays both temperature and change in temperature from historical average for individual states within the United States and entire countries outside the US. The time periods displayed included historical averages (1981-2010), the next 20 years (2020-2039), mid-century (2040-2059), and the end of the century (2080-2099). You control the development scenario, hence the degree of temperature change, by selecting the potential greenhouse gas concentration for each time period.