1. Fire : Massive forest fires may start in hot and dry weather as a result of lightning and human carelessness or from other causal factors.
2. Destruction of buildings : Demolition of buildings by human activities. 3. Accidents in industries : Chemical, biological accidents that occur due to human error, (e.g.) Bhopal gas tragedy.
4. Accidents in Transport : Violation of road rules, carelessness cause accidents
5. Terrorism : The social unrest or differences in principles leads to terrorism
6. Stampede : The term stampede is a sudden rush of a crowd of people, usually resulting in injuries and death from suffocation and trampling.