The extent of the human contribution to modern global warming is a hotly debated topic in political circles, particularly in the US. During a recent …
These articles provide an overview of why the majority of scientists are certain that climate change is occurring, is caused by human activities, and will have substantial negative impacts if not addressed. They explore how much the world has and will warm, how well early climate models have done in predicting the future, and how scientists are better understanding the sensitivity of the climate to our emissions. Finally, they look at solutions and some of the good news in emissions reductions.