ABSTRACT
Of all the trends that affect us, none is quite as pervasive as temperature. In 1998, Earth's average temperature literally went off the top of the chart we have been using for years in Vital Signs. To make room for the new information, we had to extend the vertical axis. (See Figure 1.) Average Temperature at Earth's Surface, 1866–1998 https://s3-euw1-ap-pe-df-pch-content-public-p.s3.eu-west-1.amazonaws.com/9781315071459/a27704a4-88f7-4606-b2ea-9d5d1648bbfe/content/fig0_1_B.tif" xmlns:xlink="https://www.w3.org/1999/xlink"/>
