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Originally Posted by pmaust
I've heard people ask, "why do we not see more evolution occuring now".... I've thought the same thing. |
That's just it though. You see it all the time. It's forever occurring. You just might not recognize it, or perhaps you're trying to focus your attention in a way that occludes it. During the time it takes me to type this post, multiple species are going extinct and multiple species are springing into being. It's just that we are so conditioned to see things are our own particular pace that we have a tough time visualizing the change that is evolution.
In terms of the climatic cycles, that definitely plays a role. So many organisms are effected by even a one degree shift in global temperature, and we are usually talking "base of the food chain" type organisms. So any impact that effects them has a great impact on all other life forms... regardless of the the source of temperature change (i.e. natural vs. impact from humans).
As a more direct and palatable example, there are
already polar bears dying because of temperature change.
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Originally Posted by pmaust
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Thanks for raising the question.
