This really needs to be given more attention, because the natural alternative to global warming is probably significant global cooling. Looking at the long-ter

This really needs to be given more attention, because the natural alternative to global warming is probably significant global cooling. Looking at the long-term trend we've been in a geological ice age for the past 2M years, due to the poles being permanently frozen. During this ice age we've had a few interglacial periods lasting about 10K years, but the current one is still dragging on. Either we are due for a return to glacialization or we've broken the trend; human caused warming is a likely factor.