Bionic Silkworms Can Make Super Strong Spider Silk

researchers have bioengineered silkworms to make spider silkBioengineered silkworms may help free the world from its dependence on petrochemicals, by providing a greener way to produce fabrics that are as strong as spider silk. A research team has successfully altered silkworms to produce a substance that has the distinct physical characteristics of spider silk, namely its extraordinarily high tensile strength and elasticity. If the new silkworms can be grown commercially, it raises the potential for manufacturing a wide range of fabric-based products that use less feedstocks derived from petroleum and other toxic chemicals.

How to Build a Better Silkworm

The research team is from the University of Notre Dame, the University of Wyoming, and Kraig Biocraft Laboratories, Inc. The scientists used recombinent DNA techniques to insert genetic material from spiders into silkworms. The result was a combination of worm and spider silk. Though not quite as strong as native spider silk, the new product is significantly stronger and more elastic than normal silk.

Many Uses for Super Strong Silk

Suturing and bandaging are two current medical uses for normal silk that could be replaced with a stronger product. Beyond that biomedical uses, the researchers envision super strong silk replacing petrochemical based fibers in everything from air bags and athletic clothing to canopies and other building elements based on fabric. Tents, sails, kites, and even bullet proof vests are just a few of the other possibilities.

Earth to Petrochemicals: Buh-Bye

Bioengineered silk worms are just one of the growing number of alternatives to petrochemicals and other toxic substances that are typically used in synthetic products. The movement has a name – “green chemistry” -and it takes many forms, such as using kinetic energy as a non-toxic disinfectant instead of chlorine, or eliminating the use of the greenhouse gas hexane in cooking oil production (right, who knew?) by subbing in reclaimed carbon dioxide to separate the oil from crushed seeds.

Image: Spider web by foxypar4 on flickr.com.

Largest Offshore Wind Farm in World Completed in UK

Thanet Offshore Wind Farm, UK

Since I’m on a renewable energy in Europe kick this week, thought I’d share one more piece of good news. The largest offshore wind farm in the world was launched in the UK last week.

This $1.2 billion wind farm, called the Thanet Offshore Wind Farm, consists of 100 V90 wind turbines from Danish wind energy giant Vestas. These wind turbines will create enough power for 200,000 homes (300 MW of power). They increase the UK’s wind energy capacity 30% and the UK is now the largest producer of wind energy in the world.

At its closest, the wind farm is 12 kilometers (7.5 miles) from the shoreline of Foreness Point in Kent, England. And while most major power plants are places to avoid, the company that bought this project in 2008 and brought it to completion, Vattenfall, points out that this wind farm could actually become a tourist attraction. “Many visitors have been attracted to both onshore and offshore wind farm developments in the past,” Vattenfall writes.

With this installation completed and a lot more like it in the pipeline, the UK looks like it will have no problem meeting the 2020 renewable energy target it set for itself.

“With 5GW of wind energy capacity already feeding the UK grid (three-quarters of which comes from land-based wind farms) and another 18GW of wind capacity in construction and in the project pipeline, the UK is well on its way to reach its renewable energy target of generating one-third of its electricity via renewable sources by 2020,” Timothy Hurst of Earth & Industry writes.

Wonderful to see so much renewable energy progress in Europe this month.

Related Stories:
1. Northern Ireland Plans to Hit 40% Renewable Energy by 2020
2. Scotland Aiming for 100% Clean Energy by 2025
3. Denmark & Germany Next to Announce Big Renewable Energy Targets & Possibilities

Photo Credit: Thanet Offshore Wind Farm in the UK via Vattenfall

Denmark & Germany Next to Announce Big Renewable Energy Targets & Possibilities

wind turbines Germany

Yes, more European countries are showing that they are very serious about addressing climate change, while the U.S. does,.. well,.. not much. It was just the other I wrote about Northern Ireland and Scotland‘s big renewable energy targets. I’ve got more good news out of Europe.

Germany’s 2050 Renewable Energy Target — 60%

Germany, has set a goal of getting 60% of energy from renewable resources by 2050. While a study from the Federal Environment Agency a few months ago found that Germany could get 100% of its energy from renewable resources by 2050 (becoming the first major economy to cut fossil fuels out of its energy diet), this is still a big target and will continue to keep Germany as a clean energy leader.

Denmark’s 2050 Renewable Energy Prospects — 100%

Meanwhile, up in Denmark yesterday, a report by the Danish climate commission found that due to falling renewable energy costs and rising oil and gas costs, Denmark could create an energy network completely free of fossil fuels by 2050. Wind and biomass could provide the country with most of its energy needs.

This made Danish wind energy giant Vestas happy.

“The report will also send a very clear and important signal to other countries that wind is a sustainable source of energy for future development,” said Vestas chief executive Ditlev Engel. “This is a great opportunity to solidify Denmark’s reputation as a laboratory for green, CO2-free power technology solutions that are globally required.”

A key recommendation in the report is that Denmark start setting aside 0.5% of its annual GDP for renewable energy investment.

Looks like some good movement forward from some more European leaders. Good luck to them on their achieving their renewable energy targets and possibilities.

Photo Credit: Wind turbines in Germany, by flickr user Jonathan Ablitt

Future City: Seattle on the Threshold

Article Photo

In preparation for our Future City event this Friday, we’re comparing progress towards urban sustainability in Portland and Seattle.

In its Cascadian context, Seattle is the middling city.

It’s true that it retains a vibrant central core, that it has had neighborhood planning since 1993, and that in general Seattle is more and more compact. Yet it is no Vancouver, where new development has brought the sustainability benefits of compact community to much of the city.

It’s also true that Seattle has a bold (if as yet underfunded) bike plan, a high level of commuter transit ridership, and a terrific new light rail line. Yet it is not Portland, where biking, walking and transit are more woven into the fabric of the city and its culture.

Seattle falls in the middle of the three Cascadian cities in all sorts of ways, from green building to green infrastructure. It excels in a few areas at the city level — for instance, Seattle’s utilities are national leaders in reducing their greenhouse gas emissions, preparing the region for the impacts of climate change and promoting conservation — but as a metro region it is falling, by some measurements, behind cities like Denver and San Diego, at which, frankly, Seattle’s long turned up its nose.

The Seattle metro area’s growth management is weak, its regional transportation plan is hopelessly out-dated, and the political powers that be are driving forward a number of major new highway projects — including a waterfront tunnel and new cross-lake bridge — that are bound to not only soak up scarce transportation dollars but also lock the region into further car dependence. Meanwhile, the State of Washington has fallen to the back of the regional pack in legislating the kind of incentive shifts that are driving forward green development, renewables, district energy, sustainable design and innovative retrofit programs in other states. Perhaps nowhere else on the West Coast are the politics of sunk-cost thinking so powerful, even in supposedly progressive circles.

So bad is the regional record on land use, transportation and bright green economic issues that there are honestly times Seattle’s situation seems hopeless. Despite all its natural advantages and many achievements, it sometimes looks like Seattle will simply be drowned in a sea of sprawl, choked in traffic, and left to rust economically as the world moves rapidly into a post-carbon future.

But a countervailing force is showing itself as well: a concentration of some of the best bright green thinkers and innovators in North America. Seattle is home to an array of really brilliant people working in think tanks like Sightline and Stockholm Environment Institute; in advocacy groups like FutureWise and Great City, in start-up bright green tech businesses like FrontSeat and 3Tier; in leading design organizations like the Cascadia Green Building Council (authors of the Living Building Challenge) and AIA Seattle; in architecture firms like GGLO, LMN, Mithun, NBBJ, and Hybrid Architects and ORA Architects (winners of the 99K house competition); in media outfits like Publicola and Grist (and, of course, Worldchanging itself); and in a host of other great innovative projects. Writers, artists, designers, coders, engineers, ecologists, urbanists, food advocates, transportation geeks: Seattle has something just short of a bright green scenius emerging.

Perhaps even more importantly, these thinkers have a goal: carbon neutrality.

Now, it’s a little weird to write about the goal of the entire city of Seattle becoming carbon-neutral by 2030, since I’m the one who proposed it last Fall. I’m saved from immodesty by the fact that it’s no longer my goal at all: I’m pretty much superfluous to the carbon neutrality movement at this point. The goal is now on its way to becoming official city policy, driven by hundreds of smart, dedicated advocates and a responsive City Council (especially Council President Richard Conlin and Council member Mike O’Brien [disclosure: I campaigned for both of them as a private individual]). Carbon neutrality hearings are packed. Asked to form public teams and present recommendations for action, scores of leading citizens stepped up and just two weeks ago presented guidance on everything from zero waste to transit-oriented development policies. There is serious public momentum behind the effort, of a kind perhaps unmatched by any other North American city right now.

Smart people, a bold and necessary goal, and momentum: that’s a recipe for real change. Seattle’s well positioned to take leadership on thinking through the full implications of a bright green future. Which is good, because here’s Ecotopia’s dirty little secret: all the region’s cities are anything but sustainable, now.

Urbanites from Whistler to Monterey tend to overlook the importance of scope, scale and speed when we think about the strides we’ve made in sustainability. We like to ride our bikes (or talk about it at least), buy our local organic food, mention the latest green building, donate to environmental groups, go hiking or kayaking on the weekends. Yet the simple fact is that our lives are profoundly unsustainable, both in the sense that if everyone on the planet lived like we do, our combined impact would be catastrophic, and in the sense that the cities we’ve built are extremely vulnerable to the climate chaos, resource disruptions and economic turbulence we know lies just ahead. Our cities as they are now cannot last, period.

The region’s cities have achieved a small fraction of what they need to accomplish, and time’s running out. Current climate goals demand that the developed world be essentially climate neutral by 2050 in order to facilitate a 80% total global reduction in emissions and have any chance of stabilizing CO2 at 450 ppm — but a swelling number of climate scientists are shouting that even that goal is far too lax and our progress towards it too slow. Our observable emissions have been rising faster than predicted. Our existing national commitments are too weak to save us from a 4 degree Celsius rise. What’s more, our models have failed to take into account rapid and huge climate feedbacks we may be seeing, like the melting of the Arctic permafrost already underway. I suspect now that a realistic climate strategy — if by realistic we mean “one that won’t leave our grandchildren a catastrophic hell” — is something much more like carbon neutrality in the developed world by 2040, and worldwide by 2050, with a global goal of stabilizing greenhouse gasses at 350 ppm.

To do that, we need to rapidly decouple prosperity from pollution. Bill Gates is the most notable leader to take up the cause of a climate neutral economy this year, but thousands of others are seeing the outlines of the economy of the future in zero emissions technologies and designs. We know it is possible to build that economy. We also know that cities are the best leverage point we have for doing it. At the city level, systems are big enough to make a difference on big problems like climate change and materials depletion, yet small enough to grasp. If carbon-neutrality is going to happen, it’ll be lead by cities.

In short, we need trailblazing cities. That’s why we need cities that are willing to commit to carbon neutrality and back up their talk with funded plans and strong policies: establishing the greenest building codes in the world, rapidly reducing vehicle miles traveled per person, participating in regional foodshed protection, building green infrastructure. Perhaps most important are strong incentives for transit-oriented development, the political courage to override NIMBY opposition to compact communities and the willingness to massively shift money away from auto infrastructure and towards transit and complete streets (a shift Seattle’s Mayor, Mike McGinn, is a strong advocate for). All that coupled with a shift of philanthropic funding to support more political advocacy for urban needs, increased networking of urbanist interests, and more venture capital for design innovations — walkshed technologies and bright green industries — will make carbon neutrality not just a dream but a hard, achievable target.

For our region, the wealthiest and most naturally abundant corner of the Earth, anything less than that ambition tars us all with a profound moral failure. We have a chance, right now, to help lead the world in redefining what urban life can mean. No amount of virtuous living, not even a tidal wave of small steps, will make up for that lost opportunity, if in fact we lose it. Without action that responds to the scope, scale and speed of the challenges we face, nothing else much matters.

Seattle may well lag behind the rest of region in implementing change, but it stands on the threshold of taking a step that’s perhaps more important: committing to the right goals, and throwing the muscle behind those goals to set real, systemic change in motion.

Feature image of the Seattle waterfront courtesy of WSDOT via The Architect’s Newspaper.

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(Posted by Alex Steffen in Features at 12:00 PM)

Connecting Delta Cities

Connecting Delta Cities (CDC) was set up to share best practice in adapting to climate change and consequent sea level rises for delta cities. They are holding their first conference at the end of this month.

With more than 50% of the world’s population now living in urban areas and more than two thirds of the world’s cities vulnerable to rising sea levels, water management and flood defense forms an important part of climate adaptation. (See the diagram, When Sea Levels Attack! from Information is Beautiful for a sense of the scale of the problem of rising sea levels and the vulnerability of many major cities.)

The CDC network grew out of the C40 organization, which is a group of large cities dedicated to fighting climate change. Eight cities currently form the core of the CDC network: Tokyo, Jakarta, Ho Chi Minh City, Hong Kong, London, Rotterdam, New York and New Orleans. Some of these cities are more vulnerable than others: the closer the lower parts of the city lie to sea level and the poorer the country in which the city is situated, the greater the vulnerability.

This film surveys three of the cities that have joined the Delta Cities Network — New York, Jakarta and Rotterdam — and describes how rising sea levels are already affecting them and how they are beginning to respond. New York’s subway is vulnerable to flooding, something which isn’t helped by having the entrances at street level instead of raising them higher, although this is the level at which they are most easily used by pedestrians. Measures to reduce the subway’s flooding risk are important and seem manageable. The problems described in the section on Jakarta, in part two of the film, are astounding and there are far fewer straightforward solutions. (Part one of the film is embedded below)

Parts of Jakarta are subsiding by up to 25cm per year, so that large parts of the city are flooded at high tide. The rivers and canals that flow through the city can’t deal with high levels of rainfall and in fact, their maximum capacity has been reduced to 30% because of the large amounts of rubbish littering the channels. A staggering 70% of the city is now liable to be flooded after a heavy rain storm because of the inability of the city’s watercourses to carry this water away quickly enough. The canals are now being dredged to improve water flow. What is really worrying however, is that while New York is considering how to face future challenges, for Jakarta these problems are very much of the present. Widespread flooding is a problem in Jakarta now, with sea levels having risen only a small amount so far.

The CDC has already started to develop a body of research in response to some of these problems, such as this piece [PDF] on developing resilient waterfronts in New York, or this one [PDF], which looks at the amount of water and sediment that rivers and canals in Jakarta are able to carry and how this is influenced by land use. Further research will be presented at the CDC’s conference itself, with the results to be published at the end of October.

Alison Killing is an architect and urbanist based in Rotterdam, the Netherlands.

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(Posted by Alison Killing in Urban Design and Planning at 11:30 AM)