This week I ran across a comprehensive discussion of the science of global warming and climate change that might be useful for you as you discuss the science of changing climate with others. It is presented in a question-and-answer format that follows along with a lot of questions that I get from people who don’t know much about climate or are bogged down in the politics of how to deal with a changing climate (which is a whole different question from what the science says). It has won quite a few awards and has many good reviews for clarity of presentation. You might find it useful. It is available at http://www.globalwarmingprimer.com/primer/.