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Climate change threatens people with increased flooding, extreme heat, increased food and water scarcity, more disease, and economic loss. Human migration and conflict can also be a result. [12] The World Health Organization calls climate change one of the biggest threats to global health in the 21st century. [13]
The goal was to "remind the world every day just how perilously close we are to the brink." This is in juxtaposition to the Doomsday Clock , which measures a variety of factors that could lead to "destroying the world" using "dangerous technologies of our making," [ 7 ] with climate change being one of the smaller factors.
World leaders are meeting in Paris this month in what amounts to a last-ditch effort to avert the worst ravages of climate change. Climatologists now say that the best case scenario — assuming immediate and dramatic emissions curbs — is that planetary surface temperatures will increase by at least 2 degrees Celsius in the coming decades.
Percentage change in world GDP in a net zero scenario. The solid line shows the increase in GDP that would result from efforts to reduce emissions to net zero. The International Monetary Fund estimates that compared to current government policies, shifting policies to bring emissions to net zero by 2050 would result in global gross domestic ...
According to the Intergovernmental Panel on Climate Change, the world needs to decrease emissions by 45% by the end of this decade compared to 2010 to have any hope of limiting global warming to 1 ...
2005 The national science academies of the G8 nations, plus Brazil, China and India, three of the largest emitters of greenhouse gases in the developing world, signed a statement on the global response to climate change. The statement stresses that the scientific understanding of climate change is now sufficiently clear to justify nations ...
Examples of actions consistent with the 1.5 °C pathway include "shifting to low- or zero-emission power generation, such as renewables; changing food systems, such as diet changes away from land-intensive animal products; electrifying transport and developing 'green infrastructure', such as building green roofs, or improving energy efficiency ...
As a result the UN Framework Convention on Climate Change predicts a likely increase between 2.1 and 2.9 °C in temperature by 2100, exceeding the 2 °C climate target. [9] Some scientists suggest that the development of decarbonization technologies may offer a way to reverse the accumulation of CO 2 in the atmosphere.