Global "warming," although a misnomer, is absolutely, categorically, definitely happening. You may not notice a rise in temperature, but that doesn't mean everything is normal.

Global warming doesn't mean more tropical conditions - more like total weather and ecological pandemonium. Recently, over 1,000 African seabirds washed ashore in the southeastern United States, starved to death. Scientists don't know exactly why they couldn't find appropriate food, but something is definitely out of the ordinary.

Furthermore, our CO2 emissions are contributing to it, as scientifically determined over 100 years ago - and Mother Nature is not built to handle this! Yes there was a similar warming period 6,000 years ago, but the cause was not the same.

In summary, the mid-Holocene, roughly 6,000 years ago, was generally warmer than today, but only in summer and only in the northern hemisphere. More over, we clearly know the cause of this natural warming, and know without doubt that this proven "astronomical" climate forcing mechanism cannot be responsible for the warming over the last 100 years. - Source: NOAA article

Such rapid warming on a global scale is quite rare in the geological record, and while it may not be entirely unprecedented, there is strong evidence that whenever such a change has happened, whatever the cause, it was a catastrophic event for the biosphere. - Source: Grist article

...and there absolutely is a scientific consensus. Do you really need more proof? If so, go ahead and poke around the Grist website a bit. They are a non-profit charity, funded through philanthropy plus some advertising, but with strict guidelines - and plenty of valuable information to keep you entertained, and informed.