Recording Climate Change
1950s (top photo). Over the next 50 years, small meltwater
ponds continued to grow and merge, and by the mid 1970s
had formed the Imja lake. By 2007, the lake had grown to
around 1km long. Photograph: Erwin Schneider/Alton
Byers/The Mountain Institute.
These images provide a pretty striking contrast. They accompanied this story in The Guardian.