The document discusses global warming, defining it as the increase of the Earth's average surface temperature due to greenhouse gas emissions like carbon dioxide from burning fossil fuels. It provides an example of the greenhouse effect using a car as analogy, and lists some of the effects of global warming like increased temperatures, habitat damage, and rising sea levels. The document notes that global warming and climate change are often used interchangeably, with climate change referring more broadly to long-term weather changes. It identifies pollution from burning fossil fuels as a key cause of increased greenhouse gases and lists some individual actions people can take to help address the problem.