Yes, but the point was that the 'what is bad for people is good for nature and vice versa' argument is fundamentally flawed. Regarding the environmental movement, it really depends on what you mean by "doomsday" prediction. Very few environmentalists are pushing runaway greenhouse effect turning Earth into Venus type scenarios. But there are all manner of scenarios less extreme than this but significant enough to warrant action. Regarding what we know and don't know, I am pretty certain very few people on SDF, or more likely probably nobody on SDF, has enough knowledge of climate change to determine whether we as humans know enough to make accurate predictions about the effects of global warming. What I do know is that the overwhelming scientific consensus is that global warming is anthropogenic (man-made).
These are actual climate experts, not some streetside straw poll of anyone who calls himself a "scientist".
And from:
These are actual climate experts, not some streetside straw poll of anyone who calls himself a "scientist".
And from:
Several studies have confirmed that “...the debate on the authenticity of global warming and the role played by human activity is largely nonexistent among those who understand the nuances and scientific basis of long-term climate processes”. (Doran 2009). In other words, more than 97% of scientists working in the disciplines contributing to studies of our climate, accept that climate change is almost certainly being caused by human activities.
We should also consider official scientific bodies and what they think about climate change. There are no national or major scientific institutions anywhere in the world that dispute the theory of anthropogenic climate change. Not one.