@OurWorldInData The UN projects that the world will pass 8 billion by November this year.
However, population growth rates are slowing significantly, and have dipped below 1% in the last few years.
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@OurWorldInData In its medium fertility scenario, the UN now projects that the world will hit peak population in 2080 at 10.4 billion people.
In its previous release, growth continued to 10.8 billion and did not peak before 2100.
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@OurWorldInData The global fertility rate is now around 2.3 births per woman.
This is a fall from 5 births per woman in 1950.
Two-thirds of the world population live in countries where the fertility rate is below 2.1 – the replacement ratio.
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@OurWorldInData The UN expects that India will overtake China next year (2023) to become the most populous country in the world.
Its previous release expected this to happen in 2028.
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@OurWorldInData The new estimates include excess deaths of approximately 15 million across 2020 and 2021 – much higher than the 5.4 million confirmed COVID-19 deaths.
This figure is similar to figures published by the WHO, and a little lower than those from The Economist.
Except, this is not really the case & they're measuring very different things...
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@NatureFoodJnl 'Food miles' is the distance * tonnage of food from where it's produced to where it's consumed.
This is a standard definition in the literature & how the public also thinks about it.
The authors of this study know that because they define it in the opening paragraph...
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@NatureFoodJnl In this study they have not only quantified emissions from the transport of *food* but also everything upstream from fertilizers, to pesticides, to machinery.
Fine to quantify that, but these are not 'food miles'. We should not just overwrite an already-established concept
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@OurWorldInData But we are now in a very unique position. We can be the ones to turn the tide – bringing wildlife back, rather than pushing it to extinction.
This is happening across Europe. Conservation efforts over the past 50 years have been extremely successful.
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Labor productivity in agriculture across Sub-Saharan Africa (and most countries in the region – obviously there is significant heterogeneity) is very low.
Most work in farming and earn very little.
To reduce poverty, labor productivity has to increase
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Crop yields have increased in many countries in recent decades, but are still very low.
Yields lag behind other regions, and are a small % of attainable yields.
To preserve natural habitat, yields need to increase.