A new study suggests it.

Kind of unfortunate for the it's all humanity's fault crowd, isn't it? I thought they had that science figured out and chiselled in stone. :grin:

Very interesting, thanks for sharing

While I'm sure there are factors that we aren't aware of, we defiantely need to continue to look hard at how we treat our own planet.
For way to many years profit has been put before any environmental concerns. One just needs to visit the western side of the Adirondack Mtns. in upstate NY to see the damage from acid rain. to understand that we're the cause of a lot of environmental problems.