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UN-population-growth-undesa_pd_2022_policy_brief_population_growth.pdf file
Key trends on population that
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impact sustainability and climate
https://www.worldometers.info/world-population/population-by-country/
Most developed countries have slowing population growth that is dropping below replacement rate in some countries
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Many less developed countries have high population growth rates ( though those rates are slowing somewhat ) that contribute to
- increasing poverty,
- human rights abuses,
- health issues in those countries
Some countries have policies to manage population growth and some clearly don't
if per capita carbon emissions drop 20% but world population doubles what happens to the climate, sustainability?
Updated Population Growth Trends - March 2023 - UN
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climate-2023-UN-IPCC_AR6_SYR_SlideDeck.pdf link
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UNESCO: François Wibaux, f.wibaux@unesco.org, +33145680746
World Water Assessment Programme
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UN-water-unesco.org-Groundwater making the invisible visible.pdf file
Groundwater accounts for 99% of liquid freshwater on Earth and is the source of one quarter of all the water used by humans. Large volumes of fresh groundwater are present below ground surface and distributed over the entire globe; however, this volume of freshwater is irregularly distributed over the continents.
An easy and open access resource to numerous people, leading to common pool characteristics, groundwater offers tremendous opportunities to society for gaining social, economic and environmental benefits and its contribution to satisfying our demand for water is considerable.
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The AMOC brings warm water north and east from the Caribbean, while delivering colder Arctic water south. If it were to suddenly shut down, scientists believe North America would experience weather changes such as more severe hurricanes and northern Europe would get a lot colder.
In recent years, studies have shown that the current is at its weakest in 1,000 years. Although scientists are not certain why, several studies have attributed that weakening to an influx of fresh water from the melting of Arctic sea ice, including the Greenland ice sheet, and increasing precipitation — both of which are results of global warming.
The AMOC is driven by heavier cold water sinking, which raises warm water to the surface, but since fresh water is lighter than salt water, it has reduced the tendency of colder water near the surface to sink.
an AMOC collapse would have wide-ranging effects including increased sea level rise in the Atlantic, a drop in precipitation over Europe and North America,
at the end of the last ice age, when studies suggest a “flood of freshwater spilled into the Atlantic, halting the AMOC and plunging much of the Northern Hemisphere — especially Europe — into deep cold” that lasted 1,000 years.
How People Live Impacts Environment - Old vs Young
https://www.yahoo.com/news/greta-thunberg-her-gen-z-070000637.html
In January 2020, for example, Greta Thunberg and a group of other leading “youth climate activists” co-wrote a scathing public statement in which they declared that, when it comes to the climate, “Young people are being let down by older generations and those in power.”
according to a fascinating new poll by YouGov, the old actually seem to be doing more to tackle climate change than the young.
In the poll, those aged 18-24 claimed to be the most worried about climate change. When it came to doing something other than moan, however, it was a different story. Almost 90 per cent of the over-65s said they recycled “as much as possible”, compared with only half of the young. The old were also more likely to save water, turn down the heating, wash their clothes at low temperatures, buy locally produced food, avoid excessive packaging, buy energy-efficient appliances, switch off the lights when leaving a room, and repair things rather than throw them away. On top of that, more of them had cut down on the number of flights they took.
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