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A global catastrophic risk or a doomsday scenario is a hypothetical event that could damage human well-being on a global scale, [2] even endangering or destroying modern civilization. [3] An event that could cause human extinction or permanently and drastically curtail humanity's existence or potential is known as an "existential risk". [4]
Natural hazards are excluded as a cause; however human activities can indirectly affect phenomena such as floods and bush fires. This is considered to be an important topic of the 21st century due to the implications land degradation has upon agronomic productivity , the environment, and its effects on food security . [ 76 ]
Also, the lack of immediate human toxicity does not mean the substance is environmentally nonhazardous. For example, tanker truck-sized spills of substances such as milk can cause a lot of damage in the local aquatic ecosystems: the added biological oxygen demand causes rapid eutrophication , leading to anoxic conditions in the water body.
Agent Orange use by the United States during the Vietnam War, resulting in lasting serious health effects on the Vietnamese population, such as cancer, nervous system disorders, and countless related fatalities; Cancer Alley; Goiânia accident, human deaths resulting from dismantling a scrapped medical machine containing a source of radioactivity
A hazard is defined as "the potential occurrence of a natural or human-induced physical event or trend that may cause loss of life, injury, or other health impacts, as well as damage and loss to property, infrastructure, livelihoods, service provision, ecosystems and environmental resources." [4]: 2233
A college student in Michigan received a threatening response during a chat with Google's AI chatbot Gemini. In a back-and-forth conversation about the challenges and solutions for aging adults ...
Each humanitarian crisis is caused by different factors and as a result, each different humanitarian crisis requires a unique response targeted towards the specific sectors affected. This can result in either short-term or long-term damage. Humanitarian crises can either be natural disasters, human-made disasters or complex emergencies.
Environmental disaster is caused by human activity, so many believe that such disasters can be prevented or have their consequences reduced by human activity as well. Efforts to attempt mitigation are evident in cities such as Miami, Florida , in which houses along the coast are built a few feet off of the ground in order to decrease the damage ...