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  2. Global catastrophe scenarios - Wikipedia

    en.wikipedia.org/wiki/Global_catastrophe_scenarios

    The main long-term effect is through global climate change, which reduces the temperature globally by about 5–15 °C for a decade, together with the direct effects of the deposits of ash on their crops. A large supervolcano like Toba would deposit one or two meters thickness of ash over an area of several million square kilometers.

  3. Environmental disaster - Wikipedia

    en.wikipedia.org/wiki/Environmental_disaster

    Environmental disasters show how the impact of humans' alteration of the land has led to widespread and/or long-lasting consequences. [3] These disasters have included deaths of wildlife, humans and plants, or severe disruption of human life or health, possibly requiring migration. [4] Some environmental disasters are the trigger source of more ...

  4. Environmental issues - Wikipedia

    en.wikipedia.org/wiki/Environmental_issues

    Major current environmental issues may include climate change, pollution, environmental degradation, and resource depletion.The conservation movement lobbies for protection of endangered species and protection of any ecologically valuable natural areas, genetically modified foods and global warming.

  5. Environmental impact of the Deepwater Horizon oil spill

    en.wikipedia.org/wiki/Environmental_impact_of...

    The 2010 Deepwater Horizon oil spill in the Gulf of Mexico has been described as the worst environmental disaster in the United States, releasing about 4.9 million barrels (210 million US gal; 780,000 m 3) of crude oil making it the largest marine oil spill in history. Both the spill and the cleanup efforts had effects on the environment.

  6. Natural disaster - Wikipedia

    en.wikipedia.org/wiki/Natural_disaster

    The term "disaster" itself is defined as follows: "Disasters are serious disruptions to the functioning of a community that exceed its capacity to cope using its own resources. Disasters can be caused by natural, man-made and technological hazards , as well as various factors that influence the exposure and vulnerability of a community."

  7. Effects of climate change on human health - Wikipedia

    en.wikipedia.org/wiki/Effects_of_climate_change...

    Climate change is altering the geographic range and seasonality of some insects that can carry diseases, for example Aedes aegypti, the mosquito that is the vector for dengue transmission. Global climate change has increased the occurrence of some infectious diseases. Infectious diseases whose transmission is impacted by climate change include, for example, vector-borne diseases like dengue ...

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  9. Effects of the Chernobyl disaster - Wikipedia

    en.wikipedia.org/wiki/Effects_of_the_Chernobyl...

    The International Atomic Energy Agency notes "1800 documented cases of thyroid cancer in children who were between 0 and 14 years of age when the disaster occurred, which is far higher than normal", [27] although this source fails to note the expected rate. The childhood thyroid cancers that have appeared are of an aggressive type but, if ...