
Here are a couple of anecdotes of what it means to have more people in the world than seems possible.
Spiders
‘A-Ping’ are a popular edible treat in Cambodia. For the uninitiated, ‘A-Ping’ are fried tarantulas that are, apparently, irresistible. The females are especially prized. Apparently the eggs in the abdomen are the really good bit. This odd street food is popular enough for sellers to shift 100 spiders on a good day.
Loss of forest and over-hunting means that local supplies of tarantulas near towns and cities are spent. Supply is falling as demand grows and inevitably the price rises. Spiders are sourced far from the cities where people are poor so the high prices make collection attractive. Something similar happens in many parts of Africa and is labelled poaching.
The combination of demand, supply and price leads to what ABC journalist Zoe Osborne calls an unsustainable demand. More strictly is unstainable supply for demand is a function of the number of people (growing) and their purchasing power (rising).
Either way, it is bad news for tarantula species.
Side note
Tarantula is the term used here. Sellers fry ‘A-Ping’, the large hairy spider. There are over 800 tarantula species in the world meaning that numerous species make up the ‘A-Ping’ trade. Certainly, some of them will be rare naturally, even before the additional hunting pressure. Several species will be rare now.
Donkeys
The Norwegians can be a generous bunch. Turns out that Norway is in the top ten countries for development aid giving over $4 billion in 2018 putting them second to Sweden as a proportion of gross national income and first in dollars spent per capita. They are good folk.
Many years ago one of the Norwegian aid projects gave donkeys to the people of Botswana who are fond of donkeys. The herd boys ride them and they are often used to pull carts. It made sense to provide poorer communities with free donkeys.
The gift was well received and for a while provided the intended benefits. As time passed the donkeys prospered along with the Botswana economy — a coincidence not a consequence. Soon there were many more donkeys in Botswana than were needed as prosperity from diamonds gave the herd boys other things to do and donkey carts were replaced with four-wheel-drive trucks.
Spare donkeys became a traffic hazard for they are as stubburn as their mule cousins and refuse to get out the way of the aforementioned trucks zipping along at 140 clicks.
Then the Chinese decided that there was a huge market for donkey gelatin in their country where it is known as ‘ejiao’. It is better not to ask why but we are talking rice delicacies and use in herbal medicine to treat a range of ailments from bleeding, dizziness, and insomnia to a dry cough. The demand for ‘ejiao’ is growing rapidly thanks to population growth and affluence, in this case in China. As the Chinese prosper economically so the demand for remedies to improve health and well-being, proven or anecdotal, goes up.
A few years ago donkey prices around the world began to rise sharply due to this rising demand from Chinese herbalism. Uganda, Tanzania, Botswana, Niger, Burkina Faso, Mali, and Senegal banned donkey exports to China because, not unlike the spider example above, poor people could get a favourable price for their donkey.
Arguably the removal of donkeys from the roads in Botswana is not such a bad thing so long as the herd boys are still on the internet. But, as always, the disadvantaged are further repressed when they find themselves in need of draught power.

What it means to have more people
Spider species joining the lists of rare and endangered, cruelty to donkeys and desperate measures for rural poor.
Who would have thought it?