I'm not sure about "alarm" ... but we are on track for glacial conditions again in 100,000 years ... it's a periodic thing ... the good news is that at our current rate of population expansion, we won't make it that long ... just look at the next 100 years ... 32 billion people ... do you honestly think the Earth can support that many people without serious and permanent damage our ecosystems ... temperature here is meaningless ...
A better question is why do you think the Earth can support 8 billion people without serious damage to ecosystems? ... go ahead and focus on the East China Plain, Northern Europe and Eastern North America ... the world's greatest forests ...