Canary in the coal mine – beetles

Beetles, the new canary in a coalmine. Although this number appears to be small, it has effectively removed nature’s ecological cold curtain enabling mountain pine beetles an opportunity to speed up their life cycle, invade and decimate high elevation pine forests across the continent.

Instead of absorbing CO2, billions of beetle-killed trees across the West are decaying and stoking the ever-rising pool of greenhouse gases.
Ruidoso News, 24 Jan 2012