Sunday, September 07, 2008

Hey Pollsters and Canadians, "Economy" and "Environment" is the SAME Question!

The depressing thing about the hoopla leading up to today's Canadian election call was the poll results. It's not just that the Tories, who continue to score lowest on Climate Change policy, might be set to win a "majority" government. Or that despite all evidence to the contrary, "On climate change, 68 per cent of us think Harper's government is taking the right approach" (CBC). The trouble is also at a deeper level: pollsters asked Canadians which party is best able to manage the economy and which party is better for the environment -- and got two different answers!

Remember folks, the economy and the environment are really the same issue:
  • As the saying goes, "the economic system is a wholly owned subsidiary of the ecosystem".
  • You cannot have a good economy on a wrecked planet.
  • Any economic policy which destroys the ecosystem is bound to result in disaster.
So pollsters should ask, "which party is best able to transform our economy so that it stops destroying the ecosystem on which it -- and we -- depend?" And Canadians should start thinking about it quickly, before it's too late.

Saturday, July 05, 2008

Manufacturing LCD Screens - Worse than Coal?

A recent study says that nitrogen trifluoride, a chemical that is used in manufacturing LCD screens and semiconductors, is a very powerful greenhouse gas, which "... could cause more global warming than coal-fired power plants...." This years' emissions of nitrogen trifluoride would equal all the global-warming emissions of Australia, for example. But
"...nitrogen trifluoride and some dozen other gases [were not included in the Kyoto Protocol], in part because they weren't produced at a scale large enough to cause significant harm."
[...]
"However, LCD televisions are often painted as eco-friendly because they consume less power than plasma and older rear-projection sets."
(Source: http://news.cnet.com/8301-11128_3-9983744-54.html?tag=cd.blog. Accessed: 2008-07-05. Archived by WebCite® at http://www.webcitation.org/5Z4wBRlHT)

It would be interesting to find out how much net global warming is caused by making LCD screens, when you take the global savings from burning less coal for electricity into account.

Also, as some of the comments to the cnet story suggest, it might be easier to control industrial emissions of a gas (e.g. nitrogen trifluoride) that is used in a well-defined number of factories than emissions at millions of point sources that are owned by millions of people and companies (as in CO2).

I'd love to dig deeper into this (starting with finding the original study) when I have the time.

In any event, perhaps it's time to review the list of gases under Kyoto or at least the next international agreement after Kyoto.

[Disclosure: This blog is written using an LCD screen. I also use a couple of LCD screens for work (I telecommute full-time). Our TV is a modest-sized CRT (relatively recent model, Energy Star compliant). All of these devices are bulfrogpowered with renewable electricity as mentioned in the sidebar on the right.]

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Sunday, April 20, 2008

"Food miles don't feed climate change - meat does"


We've blogged about vegetarianism as a great way to reduce your climate impact. But would eating imported fruits and vegetables negate the carbon benefits of avoiding meat? According to a recent study, the answer is a resounding "No". In fact, it's quite the opposite! Being vegetarian more than offsets the carbon emissions from imported plant-based foods. Christopher Weber and Scott Matthews of Carnegie Mellon University in Pittsburgh have done the math. NewScientist.com reports:
"Weber's team combined statistics on greenhouse gas emissions for different foods with estimated greenhouse footprints for transport for each step in a food's production and final delivery.

"Food travelled an average of 1640 km in its final trip to the grocery store, out of total of 6760 km on the road for the raw ingredients. But some foods log more kilometres than others. Red meat averaged 20,400 km – just 1800 of those from final delivery.

"Accounting for greenhouse gas emissions made those contrasts even starker. Final delivery 'food-miles' make up just 1% of the greenhouse emissions of red meat, and 11% for fruits and vegetables.

"To drive his point home, Weber calculated that a completely local diet would reduce a household's greenhouse emissions by an amount equivalent to driving a car 1600 km fewer per year. He assumed the car travels 10.6 km per litre of petrol (25 mpg). Switching from red meat to veggies just one day per week would spare 1860 km of driving.

"'The differences between eating habits are very, very striking,' Weber says."

This is great news for people in northern countries like Canada. Dietitians of Canada state that fruits and vegetables are an important part of a balanced diet. Yet fresh local produce is often impossible to find during the winter, and imported fresh produce can be expensive. The Canadian Cancer Society states that frozen, canned or dried fruits and vegetables can be good choices, too. But having looked at food labels, I've realized that many of these items come from warmer climes, as well.

The latest research implies that you can stop worrying so much about the carbon footprint of your imported carrots, oranges, and frozen okra. Just eat local produce when you can -- and most importantly, emphasize plant proteins like beans and bean products, nuts and whole grains. It's really that simple!

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Saturday, March 29, 2008

How We Enjoyed Earth Hour


After explaining to our three-year old daughter Emma the concept of Earth Hour and when it would be, she quickly came up with several suggestions of "quiet" things to do when we turned off the lights. (I'm not sure why she decided they had to be quiet things, but given that Earth Hour also coincided with her bedtime, we didn't object.) After supper she started asking if Earth Hour was here yet, and I showed her the clock and explained how much time was left. By 7:45 she couldn't wait any longer and so we started early.

First, we turned on our recently-purchased LED solar lanterns (designed for gardens, the ones with flat bases also work well if you bring them indoors at night), an older candle lantern, and a battery-operated lantern (with incandescent bulb - a genuine 20th century camping item!). The battery lantern was a hit, because we felt that it was safe enough to let Emma carry it around the house. (Yes, we will need to find one that takes rechargeable batteries and hopefully uses efficient LED bulbs.)

Emma said we could get many more solar lanterns, which was a good time to mention that Earth Hour was about seeing how much light (and other stuff) we really need, rather than always using more. That may have been the most educational moment.

Then, we made sure that all of the lights were turned off in each room, and that the TV, computer and other optional appliances were off (including their power bars!).

Emma had suggested doing puzzles, so I suggested she pick one out from her large collection. The first one she choose is a simple one for younger children, where you have to fit individual puzzle pieces with pictures of animals into cutouts on a wooden board. We each closed our eyes, attempted to identify the pieces and then fit them in with our eyes still closed. Surprisingly challenging for those who are used to relying on sight.

Then, we laid out a blanket in the living room floor and had a small picnic. Emma made everyone cozy by bringing out a bunch of cushions to sit on.

After puzzles and the picnic, it was bedtime. But first we looked out the window to see if our neighbours also had their lights off -- many of them did. We tried to find stars and managed to locate Sirius and the constellation Orion. Then, we did PJs, stories, and turned out the lantern.

All-in-all, it was a successful evening, and I'm sure we'll get requests for repeat performances! (It was also a good way to test our preparedness for emergencies like a power black-out :-)

Hope everyone else had fun too!

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Wednesday, March 26, 2008

Tim Flannery & Bridget Stutchbury to Speak in Toronto

I wish I could attend this event - it sounds great!



A Focus on the Environment

Tim Flannery and Bridget Stutchbury
The Weathermakers: The History and Future Impact of Climate Change

Speaking at the Bloor Cinema ~ 506 Bloor Street
April 3rd, 2008
Doors open at 6:30 pm ~ Lecture begins at 7:00 pm
Followed by book signing ~ Books available for purchase

Tickets are $25
General Admission
Purchase tickets online at www.rsgc.on.ca

World renown explorer, conservationist and writer-scientist, Tim Flannery has written many bestselling books, including The Future Eaters, The Eternal Frontier and of course the #1 international bestseller The Weather Makers. Tim Flannery was director of the South Australia Museum and professor at Harvard and the University of Adelaide. He was voted Australian of the year in 2006 and is now professor at Maquarie University. His new book, An Explorer's Notebook, Essays on Life, History and Climate, will publish in Canada Spring 2008.

Short-listed for the 2007 Governor General's award for non-fiction, Silence of the Songbirds follows birds on their 10,000-kilometer journey from Canada to South America, and charts the threats. Tim Flannery claims, "this book is a must-read for anyone whose heart has thrilled to the song of a bird." Author Bridget Stutchbury completed her PhD at Yale , was a fellow and research associate at the Smithsonian and is now an Associate Professor of Biology at York University.



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