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This list of global issues presents problems or phenomena affecting people around the world, including but not limited to widespread social issues, economic issues, and environmental issues. Organizations that maintain or have published an official list of global issues include the United Nations, and the World Economic Forum.
The Intergovernmental Panel on Climate Change (IPCC) has organized many of the risks of climate change into five "reasons for concern." [ 1 ] [ 2 ] The reasons for concern show that these risks increase with increases in the Earth's global mean temperature (i.e., global warming ).
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.
Cumulative land-use change contributions to CO 2 emissions, by region. [32]: Figure SPM.2b Local vegetation cover impacts how much of the sunlight gets reflected back into space , and how much heat is lost by evaporation. For instance, the change from a dark forest to grassland makes the surface lighter, causing it to reflect more sunlight.
As the latest report from the United Nations Intergovernmental Panel on Climate Change makes clear, while the planet has so far seen an average temperature rise of 1.2 degrees Celsius and will ...
Light pollution is increasing globally, and having a negative impact on wildlife and humans. But according to DarkSky International, the solutions are surprisingly simple.
Climate change can also be used more broadly to include changes to the climate that have happened throughout Earth's history. [32] Global warming—used as early as 1975 [33] —became the more popular term after NASA climate scientist James Hansen used it in his 1988 testimony in the U.S. Senate. [34] Since the 2000s, climate change has ...
Facebook is full of AI slop. X is full of “free thinkers” peddling conspiracies. Google’s search results are telling us to eat rocks. More and more, it feels like the internet has gone bad.