Media corporations culturing the mental ground of reproduction laws

Guardian
05.08.2009
By Sam Wong

Baby emissions fuel global warming

Another mouth to feed, another gas guzzler, long-distance traveller, consumer … and future parent

There are already 6.8 billion people living on this crowded planet and the figure is expected to rise to 9 billion by 2050. How can we expect to reduce global carbon emissions by 50 per cent or more if populations continue to grow exponentially? Family planning is often regarded as taboo by environmentalists, but many are now coming round to the view that curbing population growth will be crucial to combat climate change.

The Optimum Population Trust (patron, David Attenborough) runs a campaign urging parents to “Stop At Two”. Gordon Brown’s green adviser Jonathon Porritt and Science Museum director Chris Rapley have also spoken of the environmental importance of tackling population growth.

Ed Miliband, the UK’s secretary of state for energy and climate change, addressed the issue recently at a town hall meeting in Oxford. “There’s no question that population growth is part of the reason why we have growth in carbon emissions … but I’m not sure that there’s an easy or necessarily desirable solution once you’ve stated that fact.”

Can we quantify the extra emissions that result from each child born?

Statisticians at Oregon State University have done just that. Paul Murtaugh and Michael Schlax calculated that every child in the US adds 9,441 tonnes to each parent’s carbon footprint. Compare that with 1,384 tonnes of carbon dioxide for each child in China, or 56 tonnes in Bangladesh.

To arrive at their estimates, published in the journal Global Environmental Change, Murtaugh and Schlax started with the basic premise that a person is responsible for the carbon emissions of their descendants, weighted by their relatedness. So a mother and father are each apportioned half of their child’s emissions, a quarter of each grandchild’s emissions and so on. The researchers used UN projections of fertility to simulate 10,000 family lineages in each of the world’s 11 most populous countries, and estimated what the “carbon legacy” of an individual would be in different scenarios of future emissions levels.

“Many people are unaware of the power of exponential population growth,” Murtaugh said. “Future growth amplifies the consequences of people’s reproductive choices today, the same way that compound interest amplifies a bank balance.”

The perceived right to start a family is a sensitive topic

“However new-sounding the language about ‘carbon footprints’ may be, what we have here is the same old Malthusian view of people breeding themselves to destruction,” wrote William McGurn, in an opinion article in the Wall Street Journal.

So now that you know that becoming a parent could lead to a legacy of 262 times more carbon emissions than failing to convert to energy-saving light bulbs, are you still keen to start a family?

Full article

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