From 1989 to 2019 the world's population rises from five to nearly eight billion, placing more people at risk of natural disasters. Seismic events in the Indian Ocean, Haiti, Iceland and Japan create carnage and disruption. Climate change contributes to extreme weather events including Hurricane Katrina, bushfires in Australia and rising sea levels in the Pacific. A succession of international summits produces the Rio Declaration, the Kyoto Protocol, the Copenhagen Accord and the Paris Agreement, but they are considered inadequate at addressing climate change.