Permafrost melt too.
Summer Ice-free Arctic ocean
Britains (and to a lesser extent Europes)ridiculous weather patterns over the past few years.
The measured global temp increase already seen.
The retreat of all except one small fraction of the worlds glaciers (A tiny segment of the Himalayas).
The significant loss of bio-diversity across the entire globe.
Worth noting that we have massively effected the atmosphere before in a dramatic fashion, and yet - when all the legislation went through banning CFCs the problem slowly stopped getting worse and even, looks like it's possibly very slowly correcting itself.
Yet, apparently, humanity can't possibly have an effect on the atmosphere, hyuck hyuck hyuck