The document discusses the enhanced greenhouse effect and evidence of anthropogenic climate change. It notes that the Keeling Curve and IPCC reports provide unequivocal evidence that fossil fuel burning and land use change are affecting the climate. Greenhouse gas emissions per person are contributing to climate change. The IPCC predicts temperatures will likely rise 1.8-4°C by 2100, but could increase as much as 1.1-6.4°C depending on emissions scenarios, with different impacts expected in various parts of the planet. Potential responses discussed include reducing emissions through strategies like Kyoto and emissions targets, as well as carbon capture and increasing adaptation.