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Nuclear war is an often-predicted cause of the extinction of humankind. [1]Human extinction or omnicide 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.
Some of the more extreme warnings of civilizational collapse caused by climate change, such as a claim that civilization is highly likely to end by 2050, have attracted strong rebutals from scientists. [5] [6] The 2022 IPCC Sixth Assessment Report projects that human population would be in a range between 8.5 billion and 11 billion people by ...
An uncertain factor is the influence of human technology such as climate engineering, [2] which could cause significant changes to the planet. [ 3 ] [ 4 ] For example, the current Holocene extinction [ 5 ] is being caused by technology, [ 6 ] and the effects may last for up to five million years. [ 7 ]
In 2020, a paper studied 538 plant and animal species from around the world and how they responded to rising temperatures. From that sample, they estimated that 16% of all species could go extinct by 2070 under the "moderate" climate change scenario RCP4.5, but it could be one-third under RCP8.5, the scenario of continually increasing emissions.
The population of early humans dwindled to around 1,280 individuals during a time of dramatic climate change and remained that small for about 117,000 years, the study said. ... present-day human ...
It depicts the continuing sixth mass extinction, caused by humans, and the consequences of biodiversity loss and climate change. It also suggests positive action which can be taken to halt or reverse these effects. With a peak viewership of roughly 4.5 million on its premiere, the programme received positive critical reception.
An expert responds to a teenager who wants to know – is there any hope for humanity's future?
As marine life deals with the effects of plastic pollution and climate change, a huge number of species are feeling the burn. From coral reefs to river dolphins, these 20 marine species have their ...