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Nuclear war is an often-predicted cause of the extinction of humankind. [1]Human extinction is the hypothetical end of the human species, either by population decline due to extraneous natural causes, such as an asteroid impact or large-scale volcanism, or via anthropogenic destruction (self-extinction), for example by sub-replacement fertility.
Climate change and civilizational collapse refers to a hypothetical risk of the impacts of climate change reducing global socioeconomic complexity to the point complex human civilization effectively ends around the world, with humanity reduced to a less developed state. This hypothetical risk is typically associated with the idea of a massive ...
Scientists assert that human activity has pushed the earth into a sixth mass extinction event. [ 5 ] [ 6 ] The loss of biodiversity has been attributed in particular to human overpopulation , continued human population growth and overconsumption of natural resources by the world's wealthy.
The report concluded that global warming of 2 °C (3.6 °F) over the preindustrial levels would threaten an estimated 5% of all the Earth's species with extinction even in the absence of the other four factors, while if the warming reached 4.3 °C (7.7 °F), 16% of the Earth's species would be threatened with extinction.
In Our Final Hour, Rees explores various risks of human extinction and their likelihood, notably those caused by the unchecked consequences of new technologies (such as nanotechnology or machine superintelligence), uncontrolled scientific experimentation, terrorist or fundamentalist violence, or destruction of the biosphere. [4]
Resource depletion is the consumption of a resource faster than it can be replenished. Natural resources are commonly divided between renewable resources and non-renewable resources. The use of either of these forms of resources beyond their rate of replacement is considered to be resource depletion. [ 1 ] The value of a resource is a direct ...
Climate change in Pakistan is a major issue for the country. Pakistan is highly vulnerable to climate change. As with the changing climate in South Asia as a whole, the climate of Pakistan has changed over the past several decades, with significant impacts on the environment and people. [ 1 ] In addition to increased heat, drought and extreme ...
Extinction is the termination of a taxon by the death of its last member. A taxon may become functionally extinct before the death of its last member if it loses the capacity to reproduce and recover. Because a species' potential range may be very large, determining this moment is difficult, and is usually done retrospectively.