Hazards research is a branch of environmental geography that includes study of human-made (anthropogenic), environmental (natural), and blended disasters. This study is intricately tied to risk analysis.
Hazards have their roots in either natural of human-caused processes, but become hazards or disasters because of their impacts to humans. Natural hazards include: earthquakes, volcanoes, hurricanes, and tornados. Human-caused hazards include: toxins, pollution. Many hazards have blended causation including: fire, drought, and floods. Current scholars highlight this blended causation, largely driven by research into global climate change.