claim: Temperatures in the Southwest increased by nearly two degrees Fahrenheit (one degree Celsius) from 1901 to 2010, and some climate models forecast a total rise of six degrees or more by the end of this century.
evidence: This phenomenon has been suggested by some to result from the rapid melting of polar sea ice, which replaces white, reflective ice with dark, absorbent open water (i.e., the albedo of this region has decreased).