Anthropogenic hazards are hazards caused by human action or inaction. They are contrasted with natural hazards. Anthropogenic hazards may adversely affect humans, other organisms, biomes, and ecosystems. They can even cause an omnicide. The frequency and severity of hazards are key elements in some risk analysis methodologies. Hazards may also be described in relation to the impact that they have. A hazard only exists if there is a pathway to exposure. As an example, the center of the earth consists of molten material at very high temperatures which would be a severe hazard if contact was made with the core. However, there is no feasible way of making contact with the core, therefore the center of the earth currently poses no hazard. Anthropogenic hazards can be grouped into societal hazards (criminality, civil disorder, terrorism, war, industrial hazards, engineering hazards, power outage, fire), hazards caused by transportation and environmental hazards. Societal hazards There are certain societal hazards that can occur by inadvertently overlooking a hazard, a failure to notice or by purposeful intent by human inaction or neglect, consequences as a result of little or no preemptive actions to prevent a hazard from occurring. Although not everything is within the scope of human control, there is anti-social behaviour and crimes committed by individuals or groups that can be prevented by reasonable apprehension of injury or death. People commonly report dangerous circumstances, suspicious behaviour or criminal intentions to the police and for the authorities to investigate or intervene. Criminality Behavior that puts others at risk of injury or death is universally regarded as criminal and is a breach of the law for which the appropriate legal authority may impose some form of penalty, such as imprisonment, a fine, or even execution. Understanding what makes individuals act in ways that put others at risk has been the subject of much research in many developed countries. Mitigating the hazard of criminality is very dependent on time and place with some areas and times of day posing a greater risk than others. Civil disorder Civil disorder is a broad term that typically is used by law enforcement to describe forms of disturbance when many people are involved and are set upon a common aim. Civil disorder has many causes, including large-scale criminal conspiracy, socio-economic factors (unemployment, poverty), hostility between racial and ethnic groups, and outrage over perceived moral and legal transgressions. Examples of well-known civil