Climate change, caused by increasing atmospheric concentrations of greenhouse gases, is driven by human activity. Anthropogenic emissions of carbon dioxide, methane, nitrous oxide, and black carbon are primarily responsible for the changing climate. Burning fossil fuels and clearing natural habitats for human use produce the majority of these emissions. Climate change continues to cause glacial melting in Greenland and the Antarctic, rising sea levels, increases in global mean surface temperatures, increases in extreme weather events, and changes in the abundance, distribution, and composition of species. Climate change and the above ecosystem transformations are inextricably connected; as a result, these changes and impacts mutually exacerbate each other.
- L1: Summarize climatic changes over time, highlighting specific eras in human history.
- L2: Describe and discuss the anthropogenic drivers of climate change.
- L3: Consider strategies for climatic adaptation and mitigation with a focus on human health.
- L4: Critically evaluate the purpose and effectiveness of recent global climate change policies and events, considering the roles of key stakeholders.