World needs to stabilise population and cut consumption, says Royal Society

Economic and environmental catastrophes unavoidable unless rich countries cut consumption and global population stabilises

World population needs to be stabilised quickly and high consumption in rich countries rapidly reduced to avoid “a downward spiral of economic and environmental ills”, warns a major report from the Royal Society.

Contraception must be offered to all women who want it and consumption cut to reduce inequality, says the study published on Thursday, which was chaired by Nobel prize-winning biologist Sir John Sulston.

The assessment of humanity’s prospects in the next 100 years, which has taken 21 months to complete, argues strongly that to achieve long and healthy lives for all 9 billion people expected to be living in 2050, the twin issues of population and consumption must be pushed to the top of political and economic agendas. Both issues have been largely ignored by politicians and played down by environment and development groups for 20 years, the report says.

“The number of people living on the planet has never been higher, their levels of consumption are unprecedented and vast changes are taking place in the environment. We can choose to rebalance the use of resources to a more egalitarian pattern of consumption … or we can choose to do nothing and to drift into a downward spiral of economic and environmental ills leading to a more unequal and inhospitable future”, it says.

At today’s rate of population increase developing countries will have to build the equivalent of a city of a million people every five days from now to 2050, says the report. “Global population growth is inevitable for the next few decades. By 2050, it is projected that today’s population of 7 billion will have grown by 2.3 billion, the equivalent of a new China and an India.”

But the sheer number of people on earth is not as important as their inequality and how much they consume, said Jules Pretty, one of the working group of 22 who produced the report. “In material terms it will be necessary for most developed countries to abstain from certain sorts of consumption, such as CO2. You do not need to be consuming so much to have a long and healthy life. We cannot conceive of a world that is going to be as unequal as it is now. We must bring the 1.3 billion people living on less than a $1.25 a day out of absolute poverty. It’s critical to slow population growth in those countries which cannot keep up with services.”

Nuclear disaster or plague likely unless population shrinks and natural resources are reassigned to poor, says Prof Paul Ehrlich

The Guardian, By John Vidal, April 26

The world’s most renowned population analyst has called for a massive reduction in the number of humans and for natural resources to be redistributed from the rich to the poor.

Paul Ehrlich, Bing professor of population studies at Stanford University in California and author of the best-selling Population Bomb book in 1968, goes much further than the Royal Society in London which this morning said that physical numbers were as important as the amount of natural resources consumed.

The optimum population of Earth ”“ enough to guarantee the minimal physical ingredients of a decent life to everyone ”“ was 1.5 to 2 billion people rather than the 7 billion who are alive today or the 9 billion expected in 2050, said Ehrlich in an interview with the Guardian.

“How many you support depends on lifestyles. We came up with 1.5 to 2 billion because you can have big active cities and wilderness. If you want a battery chicken world where everyone has minimum space and food and everyone is kept just about alive you might be able to support in the long term about 4 or 5 billion people. But you already have 7 billion. So we have to humanely and as rapidly as possible move to population shrinkage.”