Birth Weights on the Decline

  • Researchers studied records of more than 36 million births and found the birth weight of the average full term single baby actually decreased over a 15 year period. (Photo courtesy of the Library of Congress)

American moms are giving birth
to smaller babies. Rebecca Williams
reports on a new study that suggests
this recent trend might be the
reversal of American babies getting
bigger and bigger of the past half-
century:

Transcript

American moms are giving birth
to smaller babies. Rebecca Williams
reports on a new study that suggests
this recent trend might be the
reversal of American babies getting
bigger and bigger of the past half-
century:

A few giant babies made the news last year. One was even 15 pounds.

“At guess at some point you can’t make bigger babies (laughs) so maybe we’ve maxed out.”

That’s Dr. Emily Oken with Harvard Medical School. She says babies are getting smaller. She studied records of more than 36 million births and found the birth weight of the average full term single baby actually decreased over a 15 year period.

But it was just a couple of ounces. Dr. Oken says that’s not a big deal for most healthy babies.

“But, is there an underlying reason why perhaps babies might be getting a little bit smaller and does that exposure have a short or longer term health implication for babies?”

She says she ruled out factors such as age, race, tobacco use, and birth complications. Dr. Oken says next, she wants to study mother’s diets, exercise, stress, and exposure to environmental toxins as possible causes.

For The Environment Report, I’m Rebecca Williams.

Related Links

Interview: A Pound of Coal

  • Coal train. (Photo courtesy of the Energy Information Administration)

When you turn on the lights,
there’s a pretty good chance
you’re burning coal. Almost
half of the nation’s electricity
comes from coal. Burning coal
causes the greenhouse gas,
carbon dioxide. But, have you
ever wondered how much?
Lester Graham got a pound of
coal, and then talked to Ezra
Hausman. He’s
the Vice President of Synapse
Energy Economics in Cambridge,
Massachusetts. The first question –
how long would a pound of coal
light up a hundred-watt incandescent
light bulb?:

Transcript

When you turn on the lights,
there’s a pretty good chance
you’re burning coal. Almost
half of the nation’s electricity
comes from coal. Burning coal
causes the greenhouse gas,
carbon dioxide. But, have you
ever wondered how much?
Lester Graham got a pound of
coal, and then talked to Ezra
Hausman. He’s
the Vice President of Synapse
Energy Economics in Cambridge,
Massachusetts. The first question –
how long would a pound of coal
light up a hundred-watt incandescent
light bulb?:

Ezra Hausman: Well, you haven’t told me where you got that pound of coal. Uh, it makes a big difference if it’s from the Appalachian region or the Western region, such as Wyoming in the United States. The Appalachian coal, Eastern coal, would burn a light bulb for about, uh, 10 or 12 hours. A pound of Western coal would only burn it for about 5 or 6 hours.

Lester Graham: There’s that much difference?

Ezra: There’s a big difference in the energy content of the coal, that’s correct.

Lester: And coal, a good portion of coal, is pure carbon. What kind of CO2 omissions would we expect from this one kind of coal?

Ezra: Well, a pound of coal is, let’s say, it’s about half carbon. So that would be a half a pound of carbon, but for every atom of carbon you add two atoms of oxygen from the air. So, you get for every 12 grams of carbon, you get 44 grams of carbon dioxide. That’s basically just how the chemistry works out when you burn carbon and oxygen; it produces carbon dioxide in that ratio.

Lester: So, this one pound of coal, would admit, by weight, more CO2 than I have in my hand here?

Ezra: That’s right; it would end up admitting about two pounds of CO2. Depending again on where the coal came from and how much carbon is in it.

Lester: Now my environmentalist friends would like to see no more coal plants built, no more coal burning power plants built, simply because of the CO2 emissions. The coal industry tells me they’re working on clean coal; there are experiments going on right now to find ways to sequester CO2 and other experiments going on how to store it underground. What do you think is the future of coal?

Ezra: Well, first of all, I think it’s important to say that there is no such thing as clean coal today. So in the first place, coal mining is an extremely environmentally damaging and dangerous process. The high volumes techniques that are now in use including strip-mining and mountain top removal have devastating consequences on mining regions. And secondly, while there are techniques in place that eliminate many of the regular pollutants such as sulfur and nitrogen from coal combustion, there is no current technology that can significantly reduce the amount of CO2 emitted from power plants.

Lester: What do you see as the future of coal and power generation from coal in America in the future?

Ezra: Well, I think we really have no option but the phase out the use of coal for power generation over the next several decades. The problem with coal is not that each pound has so much carbon; the problem is that there is just a vast reservoir of carbon and potential carbon dioxide in the coal reserves under ground in the United States.

Ezra Hausman is Vice President of Synapse Energy Economics.
He talked with The Environment Report’s
Lester Graham.

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Does Fair Trade Coffee Work?

Coffee beans can be pretty confusing these days.
At times it can seem like a political, even a
moral decision. You might want to buy those pricey specialty beans,
but now the supermarket also carries beans labeled Fair Trade
Certified. That might seem like the nicer thing to do for the farm
workers – and the environment. Julie Grant takes a look at those
claims:

Transcript

Coffee beans can be pretty confusing these days. At times it can seem like a political, even a
moral decision. You might want to buy those pricey specialty beans,
but now the supermarket also carries beans labeled Fair Trade
Certified. That might seem like the nicer thing to do for the farm
workers – and the environment. Julie Grant takes a look at those
claims:


Ahhh… it smells great in here. The owner of this coffee shop travels
the world in search of the best coffees. Linda Smithers has gone to
places such as South and Central America, Africa, and southern Asia to
visit farms and to taste coffee. She imports her favorites and roasts
them at her store.


And she has high expectations. Smithers wants to make sure that if
you’re paying a few dollars for a specialty coffee, it’s a satisfying
personal experience:


“And coffee should be able to do that for you. It should bring you
closer to you, and closer to the farmer. You should feel like you know
the farmer. And you feel passion and an intimacy with that farmer.”


I should probably have mentioned, Smithers really loves coffee.
She says the best coffees are grown on farms that are good to the
coffee trees, the local water, and the workers:


“Happy workers, safe workers, produce better coffee. They just do. I
see it every time I go to a farm. I see it when a worker enjoys what
they’re doing and feel they’re getting a fair price. They’re just like us. You
would not enjoy working and at the end of the day being given 20 cents.
You wouldn’t be happy with that. You wouldn’t work in a pleasant
way. And you wouldn’t pay attention to picking the ripe beans rather than the unripened beans.”


The Fair Trade label claims it’s found one way to help keep coffee
farmers happy and safe. The Fair Trade certification is supposed to be
a guarantee that farm co-operatives will get at least $1.21 for a pound
of beans. When coffee prices are low, that can be twice what other
farmers are paid. Fair Trade also promises farm workers have safe
conditions and are paid a living wage.


Michigan State University Professor Dan Jaffee wanted to know if the
Fair Trade system was doing what it set out to do:


“The Fair Trade movement claimed to be able to help bring them out of
poverty, improve their farming practices, make them more sustainable
and just generally improve conditions a lot, and I was interested in
finding out whether that was the case.”


Jaffee spent a few years in Oaxaca, Mexico studying two farming
communities. Some coffee farmers were part of Fair Trade
cooperatives, some decided against it. He’s just published a book called
Brewing Justice to report his findings. Jaffee says families
that joined Fair Trade were more food secure when the market price of
coffee fell:


“That is, they have food shortages much less of the time. They have
significantly greater access to animal protein, foods like milk and
meat and cheese in their diet. And they’re essentially able to feed
their children much more of the time than their neighbors, who were
really, at the time the coffee prices were at their low point at the
time I was doing my research in 2001, 2002, 2003, who were definitely
showing signs of malnutrition and there was a significant problem with malnutrition
in these communities.”


Fair Trade is still only a small fraction of the coffee market, but
its share of customers is growing, and the big players are taking
notice. Nestle is marketing Fair Trade products in the UK, and you can
find the Fair Trade seal at your neighborhood Starbucks. Only 3.7%
of Starbucks coffee is Fair Trade certified, but Jaffee says
that small percentage still makes Starbucks the single largest buyer of
Fair Trade coffee in the US.


Smaller coffee shop owners, such as Linda Smithers, also
buys some Fair Trade coffee. But Smithers doesn’t think guaranteeing a
specific price is the best way to encourage farms to grow the best
coffee:


“You’re given a price regardless of the quality. I have a problem
with that. I do not think that’s a sustainable agricultural model.
Remember, I’m a coffee person. I’m not a cause person, I’m
a coffee person. And to me, sustainable is: the product must be
outstanding and have good sociological and ecological practices, then
get a fair price.”


Smithers believes farms that treat workers and the environment well
naturally have the best tasting coffee and will always get a fair
price in the specialty coffee market.


Some conservative economists agree with her. They say the Fair Trade movement
will only continue to grow if looks beyond the socially-conscious crowd and continues
to improve the taste and consistency. That’s what people eyeing those gourmet coffee beans
want.


Smithers says Fair Trade has already been a success in that it’s put
issues of working conditions and the environment on the table…
and she could sit and drink a cup and talk about that for hours.


For the Environment Report, I’m Julie Grant.

Related Links