Green Alps

[selenite0]

Swiss researchers find Alpine glaciers were much smaller in prehistory than they are now.

There's a lot of interesting data points that show the climate changing in big ways, completely unrelated to human action. I'm not very surprised. The planet staying a constant temperature, that would be surprising.

Comments

[jhubert.livejournal.com]

Interesting. Has anyone done similar studies on other mountain ranges with glaciers?

Of course, this is probably a fairly local, European phenomena - there's lots of data on historic climate changes in other parts of the world. And of course, Joerin points out that all this means that climate might be more unstable than previously thought - and this implies that human activity might push the climate system over some threshold and into a direction where we don't want it to go.