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Starting to Talk About Population

How does population affect the environment? It can be a hard subject to talk about, but here are some resources to help learn about the issues and start conversations.

| Sept. 23, 2008

In many discussions about the environment, population growth is the last thing anyone wants to talk about. For one thing, family size is a subject that quickly becomes very personal. And when you consider that one of the most important decisions that people make is whether to have children — and if so, when, how many and with whom — it’s no surprise that even theoretical discussions about population concerns and family planning can turn into awkward conversations.

Nonetheless, global population growth is an issue that begs to be discussed. After all, population size is directly tied to many other issues that affect everyone on the planet — access to clean air and water, wealth and poverty, and global supplies of food and energy.

So let’s start with a simple question. How many of us are there?

By the Numbers

As I’m writing this, the population clock on the U.S. Census Bureau Web page estimates world population as 6,724,401,912. What do you want to bet that’s off by at least one or two people? But you get the idea the clock is meant to convey: World population is growing rapidly and continuously, and 6.7 billion is a good estimate of where we are today. Another population counter on this page puts the U.S. population at about 305 million.



Trying to predict future population growth requires a little more guesswork. For a good discussion of this issue, check out this recent article from the nonprofit Worldwatch Institute. It notes that most demographers expect that by 2050 world population will be between 8 billion and 11 billion people. However, as the author points out, these estimates assume a slowdown in birth rates that may not materialize. Here’s a graphic showing different population projections based on high and low estimates of growth. And that leads us to a more difficult question: What do these different possibilities mean for the planet? How many people is too many?

A Global Issue

There’s a lot of debate about how many people the Earth can reasonably sustain, but you don’t have to look far to find evidence that we’re already experiencing a few problems. Here are a handful of articles linking population growth to the loss of forests and biodiversity, and increases in the greenhouse gas emissions that are causing climate change. Population growth also puts a strain on water resources and food supplies.

Ruth_16
7/23/2009 11:18:04 AM

The two most revealing articles to be found on this topic are at www.populationelephant.com For sure read "The problem with the number" which totally exposes the inaccuracies of the U.N.'s projections.


Donna_46
3/30/2009 11:39:41 AM

I took myself out of the gene pool. Until we begin to teach our children (inculcate) principles in them, right and wrong , we will reap what we sow (blessings or maledictions).


Growthbuster
12/30/2008 12:07:08 AM

1. Make sure everyone understands we have more people now than the Earth can sustainably support. 2. Encourage people to plan their families and make responsible decisions about family size knowing the ramifications of larger families and continued population growth. 3. Make family planning services universally available. 4. Eliminate all the financial incentives governments provide for having children. If necessary implement financial disincentives for larger families. 5. Stop automatically adding the word "control" to the conversation everytime sustainable population levels are discussed. Control will only be necessary if we can't all wise up and start voluntarily making responsible decisions about family size. It's an obligation we each have to our own children - the obligation to leave them a world that has half a chance of meeting their needs. You might find this Population Solution PSA interesting: http://vimeo.com/2495995 Dave Gardner Producer/Director Hooked on Growth: Our Misguided Quest for Prosperity www.growthbusters.com







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