Despite Attacks from Critics, Climate Science Will Prevail by Rajendra K. Pachauri: Yale Environment 360

Science thrives on debate. Only by challenging scientific findings do we expose weak arguments and substantiate strong ones. But the process relies on the debate being devoid of political taint and grounded in sound scientific knowledge. Sadly, that has not been the case in the recent barrage of criticism leveled against climate science.
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The IPCC makes no policy recommendations of its own.
...By the time it was completed, AR4 cited approximately 18,000 peer-reviewed publications. It also included a limited amount of gray (or non-peer-reviewed) literature in cases where peer-reviewed literature was unavailable. (For example, there is often no peer-reviewed literature on impacts of climate change, both current and projected, in many developing countries.)
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The health status of millions of people is projected to be affected, for example, through increases in malnutrition, diseases, and injury due to extreme weather events. It is reasonable to project increased frequency of cardio-respiratory disease due to high concentrations of ground level ozone in urban areas related to climate change. Infectious diseases will likely spread as the climate warms. The availability of water would also be impacted significantly by climate change, with exacerbation of current stresses on water resources.