What is the latest on the science of Global Climate Change and the need to cut greenhouse gas emissions?
Many of the undisputed facts have not changed over the last decade. For example, based on samples of air trapped in arctic ice, scientist have determined that, prior to the industrial revolution (which began in England in the mid 1800s), the concentration of carbon dioxide in the atmosphere had been stable at a level of around 288 parts per million (ppm). At that time (when people began to burn fossil fuels) the concentration of carbon dioxide in the atmosphere began to increase and is now at 370 ppm. This strong correlation indicates that increased concentrations of greenhouse gases in the atmosphere have likely increased the amount of heat from the sun that stays within the Earth’s ecosystem, and thus contributing to increased global temperatures.
