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My kid loves statistics and 15 minute cities

Byoliveridley
My kid’s transport goals for the year

We have started this simple diary where my 7 yo tracks each of her trips and categorizes them as car or not car. I find the analog simplicity of this approach to be appealing and I’ll be helping her keep this updated. I am also resisting temptation to add more data to this survey for myself (her project, not mine!) My movement goals are the same as hers, walk and bike as much as practicable leaving driving only for the “it’s too far or I don’t have even 10 minutes to spare or I have to carry something that won’t fit on my cargo bike, or it’s not safe to bike with a kid”.

Our life for the most part now fits the 15 minute city model, the concept that “Everyone living in a city should have access to essential urban services within a 15 minute walk or bike.”. Other than my once a week commute to work, almost everything we do is in that 15 minute walk/bike window and while our all age and abilities bike network is still work in progress, the trend is clear (thanks Dave Thompson Victoria City Councilor for the graphic from the CRD transportation survey)

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    Until now scientists have believed that young turtles live in the open ocean, but change to a coastal habitat when they reach a certain size.

    But researchers working in Cape Verde found that most adults nesting there retain their open water behaviour, with the attendant risk posed by longline boats.

    “The bottom line is that we thought juveniles experienced this risk out in the open ocean with longline fisheries,” said Brendan Godley from the University of Exeter.

    “We thought that if you got them past that, then unless they’re being taken by inshore fisheries, you’re OK,” he told the BBC News website.

    “But now you’ve got adults exposed to longline fisheries, which is very worrying.”

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    Meanwhile, the Conservative party received an F+ because it has chosen a "completely inadequate" target for reducing greenhouse gases and because it is relying on intensity targets to meet its goals.

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    So, all the other parties get at least a B grade. The conservatives are relying on so called greenhouse gas intensity targets, or emissions/dollar of GDP, which is a meaningless statistic. As many have pointed out previously, greenhouse gas intensity is a meaningless statistic and decreases naturally as processes grow more efficient and economies transition from a manufacturing to a service oriented economy. The GHG intensity dodge was invented by the Bush administration and the conservatives were happy enough to follow along.

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    Pesticide exposure in Punjab and Haryana is out of control. When I was growing up, the Green Revolution was idolized and idealized to degree that in hindsight seems a little excessive. But back then, this octupling of wheat and rice yields in Punjab and Haryana catalyzed the transformation of India from a country mired in famine and food shortages to one that occasionally runs out of room to store excess food. So, this story (courtesy of 3QD) caught my attention.

    Green.view | Chemical generation | Economist.com:

    IF INDIAN newspaper reports are to be believed, the children of Punjab are in the throes of a grey revolution. Even those as young as ten are sprouting tufts of white and grey hair. Some are going blind. In Punjabi villages, children and adults rare afflicted by uncommon cancers.

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    The article concludes by saying that the government is encouraging the use of techniques including organic farming, more crop rotation, etc, and how this is ironically “reversing” the green revolution. But two separate issues are getting mixed up here. The green revolution was not won on excessive use of fertilizers, monoculture, excessive water use, and so on. Instead, the development of new hybrid, high yielding varieties of rice and wheat kick started the revolution. The wholesale adoption of water and input intensive agricultural techniques came along for for the ride with the rest of the revolution.

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  • Nanoparticles the new asbestos?

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    I am sure everyone has heard about the wonders of nanotechnology, but what about the other side?

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    There was a time when asbestos was the wonder material, malleable and fire resistant, capable of being woven into sheets, and being incorporated into buildings for fire retardation. Unfortunately, many cases of asbestosis and mesothelioma later, not so wonderful. Asbestos is a special case because the fibers started out big and would keep breaking down into smaller particles till they reached that magic size range between 0.1 and 1-2 um where they could stay suspended in the air for a long time, and also take advantage of the lungs’ inability to filter particles that size to any great degree of efficiency.

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    Update 9:00 AM, 8-3-2006
    Well, I swear, I did not see this before I wrote this morning!

    The question of the day, however, is are they safe for humans and other living things? Earlier this year, Andrew Seaton, A U.K. scientist who was the lead author of a 2004 report investigating the saftey of nanotechnological materials raised a bit of a ruckus by comparing carbon nanotubes to asbestos fibers. Asbestos once had its day in the sun as an all-purpose wonder material. But then we learned that tiny asbestos fibers, once ingested by the human body, could be extremely deadly. Carbon nanotubes: also easy to ingest, and exquisitely capable of penetrating cell structures. Could they be equally toxic?

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