Actually Dave44, I was referring to Janet Lubchenko, who is a oceanographer (and who never claimed to have invented the internet). She has stated the preponderance of evidence points toward global warming.
The best long-term historical data comes from the Greenland ice core data. It documents trapped atmospheric gases in the ice for the past 2 million years +/-. Trapped gases prove the world has warmed significantly. More greenhouse gasses are in our atmosphere now than 2 million years ago. If the Greenland ice sheet melts, world ocean levels will increase by as much as 24 feet. In the past 20 years, the Greenland ice sheet has been melting at accelerated speeds: 40 feet per year or more. Fifty years ago the Greenland ice sheet was growing, not melting. Twenty of the hottest global temperatures ever recorded have happened in the last 40 years. Huge icebergs have been breaking off of Antarctica in the last 15 years. The North polar ice cap was open water 4 years ago: something never before seen. Almost all glaciers world-wide are melting at alarming rates. (Not all, but most.) A polar bear was recently monitored swimming 1400 miles to find an ice flow to hunt seals.
The conclusion again: a _preponderance_ of evidence proves global warming is happening. The majority of world scientists concur.