From that chart it looks like the Earth stabilized after old trauma. Anything projected after that is most likely bullshit. And we are in a cooling period now based on Solar activity. >This event, known as the Paleocene-Eocene Thermal Maximum, saw temperatures up to 60 degrees Fahrenheit (16 degrees Celsius) above modern levels, Zachos said, and was driven by a massive release of carbon into the atmosphere, thought to be the result of huge volcanic eruptions in the North Atlantic. So they are claiming that anthropogenic CO2 is going to compare to a planet exploding? I'm unconvinced. >About 3 million years ago, Earth entered an icehouse phase, driven by waxing and waning ice sheets in the Northern Hemisphere. Wait... So waning ice sheets cause it to get colder? So the reduction of ice sheets today should back up the cooling theory? >Now, human greenhouse gas emissions are causing temperatures to rise NO. NO. You just said that ice sheet waning causes cooling. And what has been in the news for the past 10 years? Global warming propaganda that suggests a reduction of polar ice caps. So it should be cooling.