The Models are Unproven

This is just one of dozens of responses to common climate change denial arguments, which can all be found at How to Talk to a Climate Sceptic. Objection:Why should we trust a bunch of contrived computer models that haven't ever had a prediction confirmed ? Talk to me in 100 years.Answer: Of course, given the …

We Can’t Even Predict the Weather Next Week

This is just one of dozens of responses to common climate change denial arguments, which can all be found at How to Talk to a Climate Sceptic. Objection:Scientists can't even predict the weather next week, so why should we believe what some climate model tells us about 100 years from now?Answer: Climate and weather are …

Chaotic Systems are not Predictable

This is just one of dozens of responses to common climate change denial arguments, which can all be found at How to Talk to a Climate Sceptic. Objection:Climate is an inherently chaotic system, and as such it can not be predicted.Answer: Firstly, let's make sure we define climate. Climate is generally viewed as an average …

Natural Emissions Dwarf Humans’

This is just one of dozens of responses to common climate change denial arguments, which can all be found at How to Talk to a Climate Sceptic. Objection:According to the IPCC, 150 billion tonnes of carbon go into the atmosphere from natural processes every year. This is almost 30 times the amount of carbon humans …

The CO2 Rise Is Natural

This is just one of dozens of responses to common climate change denial arguments, which can all be found at How to Talk to a Climate Sceptic. Objection:It's clear from the ice cores and other geological history that CO2 fluctuates naturally. It is a bogus assumption that the rise happening today has to be from …

The Null Hypothesis Says it’s Natural

This is just one of dozens of responses to common climate change denial arguments, which can all be found at How to Talk to a Climate Sceptic. Objection:Natural variability is the null hypothesis and an anthropogenic CO2 warming effect needs compelling evidence before there is any reason to take it seriously.Answer: The null hypothesis is …

Global Warming Is Nothing New

This is just one of dozens of responses to common climate change denial arguments, which can all be found at How to Talk to a Climate Sceptic. Objection:Global Warming has been going on for the last 20,000 years.Answer: It is quite true that 20Kyr ago the temperature was some 8 to 10oC colder than it …

Vineland Was Full Of Grapes

This is just one of dozens of responses to common climate change denial arguments, which can all be found at How to Talk to a Climate Sceptic. Objection:Newfoundland was so warm in the Medieval Warm Period that when the Vikings landed they called it Vineland and brought boatloads of grapes back to Europe.Answer: One can …

Greenland Used to be Green

This is just one of dozens of responses to common climate change denial arguments, which can all be found at How to Talk to a Climate Sceptic. Objection:Greenland used to be a lovely hospitable island when the Vikings settled it. It was not until the Little Ice Age that it got so cold they abandoned …

Geological History Does not Support CO2’s Importance

This is just one of dozens of responses to common climate change denial arguments, which can all be found at How to Talk to a Climate Sceptic. Objection:If you look back over the last 600 million years you see that there really is not much correlation between temperatures and CO2 levels. Clearly CO2 is not …