Below are links to photographs that document the widespread retreat of glaciers during the past century. Although there are some exceptions to this trend, and although some retreats and advances could be expected due to purely local random variability, the fact that the majority of observed glaciers worldwide are retreating simultaneously is one among many pieces of evidence that the climate is warming.

Sources of Images

Asulkan Glacier, Glacier National Park, British Columbia (1905 & 1985)
Athabasca Glacier, Banff-Jasper, Alberta (1907 & 1998)
Boulder Glacier, North Cacades, Washington (1985 & 2003)
Columbia Ice Field, Jasper National Park, Alberta (1906 & 1998)
Easton Glacier, North Cascades, Washington (1985 & 2003)
Grinnel Glacier, Glacier National Park, Montanna (1938 & 2005)
Illecillewaet Glacier, Glacier National Park, British Columbia (1889)
Illecillewaet Glacier, Glacier National Park, British Columbia (2004)
South Cascades Glacier, Alaska (1979)
South Cascades Glacier, Alaska (2003)

Bridgland Collection for more Canadian then-and-now pairs

Qori Kalis, Peru (1978 & 2004)
Yanapaccha, Huascaran National Park , Peru (1939 & 1997)

Pasterzematch, Austria (1875 & 2004)

Elena Glacier, Mt. Stanley, Congo - Uganda Border (1905, 1960, & 1994)
Kilamanjaro, Tanzania (1939)
Kilamanjaro, Tanzania (2000)
Kilamanjaro ice remnant, Tanzania (2000)