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Philippe Starck's latest creation — a plastic chair — earned its name on the first sketch: Mr. Impossible. The French designer said it simply couldn't be made. The challenge? The weld. Polycarbonate chairs are typically formed using a single mold, but Starck's translucent design required two: one for the legs, one for the seat. Fusing the parts using existing methods would mean an unsightly seam, so the engineers at Italian furniture maker Kartell had to forge a new technique. The key was a very big laser. Trained at specially formulated polycarbonate, it left a seam smooth enough to create the illusion Starck had imagined: a chair that appears to levitate. We reached across the ether to elicit the designer's thoughts. Like Starck's design, our conversation seemed to float on air.

Wired: What was the inspiration for Mr. Impossible?

Starck: The speed of evolution of our civilization and the dematerialization that rules all our production. Take the computer: It was the size of a room, then a briefcase. Now it's a credit card. You cannot dematerialize a chair completely, because you must continue to sit on it. But you can make it invisible. That's why I made the Mr. Impossible with a double shell — it's basically made of air.

Wired: Recently, you have begun to look at the environmental impact of your designs. How does a plastic chair fit in?

Starck: The stupidity of the ecological movement is that people kill trees for wood. It's ridiculous. The best ecological strategy is to make products of a very high creative quality, so you can keep them for three generations. I prefer to make a very good chair in the best polycarbonate than make any shit in wood that will be in the trash one year later.

Wired: Why not use recycled plastic?

Starck: It's a little joke of a material. You can do almost nothing with it. And I also refuse bioplastic, which comes from something that people can eat. Scientists agree that we have a real food problem, a famine approaching. It's a crime against humanity to take something you can eat and make a chair — or use it as gas for your SUV.

Wired: How do you reconcile those principles with your position as creative director for Virgin Galactic?

Starck: Every project should fit the big image of evolution. You can consider Virgin Galactic as something only for rich people, but you can also analyze the incredible help that it will give us. The exploration of space is a vital part of our evolution. We don't have any future if we don't go into space. This world will explode in 4 billion years. We have time, but not so much.

Thomas Friedman is about to dive into the green-tech fray. In his latest book, Hot, Flat, and Crowded, the multi-Pulitzer-winning journalist says everyone needs to accept that oil will never be cheap again and that wasteful, polluting technologies cannot be tolerated. The last big innovation in energy production, he observes, was nuclear power half a century ago; since then the field has stagnated. "Do you know any industry in this country whose last major breakthrough was in 1955?" Friedman asks. According to the book, US pet food companies spent more on R&D last year than US utilities did. "The Stone Age didn't end because we ran out of stone," he says. Likewise, the climate-destroying fossil-fuel age will end only if we invent our way out of it.

But he's not suggesting a new Manhattan Project. "Twelve guys and gals going off to Los Alamos won't solve this problem," Friedman says. "We need 100,000 people in 100,000 garages trying 100,000 things — in the hope that five of them break through."

Our current efforts are not only inadequate, they're hopelessly haphazard and piecemeal. Friedman argues it'll take a coordinated, top-to-bottom approach, from the White House to corporations to consumers. "Without a systems approach, what do you end up with?" he asks. "Corn ethanol in Iowa."

The New York Times columnist, who keeps up a punishing travel schedule, is just back from the Middle East and London. "If you don't go, you don't know," he says. Such wanderings provided the material for his 2005 best seller, The World Is Flat. Now he has added two new terms to his diagnosis of global ills: the intertwined problems of climate change and population growth — "too many carbon copies," as he puts it.

In this new world, governments and companies that take the lead will find themselves with the single most valuable competitive advantage of our time.

To illustrate, Friedman tells the story of a Marine Corps general in Iraq who requested solar panels to power his bases. Asked why, he explained that he wanted to win his region by "out-greening al Qaeda." Instead of trucking in gas from Kuwait at $20 a gallon — money that fuels oppressive petro-dictatorships — in convoys that are vulnerable to roadside bombs, why not beat the insurgents by taking away their targets and their funding?

Coming out months before the presidential election, Crowded is sure to bigfoot its way into the campaign. "McCain and Obama come from the right side of this debate," Friedman says. "They have the right instincts, but neither is quite there yet. They haven't yet thought it through fully." The battle over "green," he believes, will define the early 21st century just as the battle over "red" (Communism) defined the last half of the 20th.

1963: The world's longest floating bridge, the Evergreen Point bridge, opens. It connects Seattle with communities on the east side of Lake Washington.

Pontoon bridges have been around since ancient times. Lash some boats together side-by-side in a stream or river, put some planks across them, and you've got a serviceable bridge. Armies love 'em because they can be deployed quickly so troops and equipment can be deployed quickly.

For a large, permanent bridge, the concept is scalable, but not easily. However, if you need to bridge a deep body of water that has a soft bed, a more conventional design might not be feasible. That's what faced Washington state engineers who set out to bridge Lake Washington. And they'd done it before, with the shorter Lake Washington Floating Bridge, opened in 1940. (A few miles south of the Evergreen Point bridge, it now carries the eastbound lanes of I-90.)

Starting in August 1960, construction crews ashore built 33 hollow, concrete boxes, each 15- or 16-feet high and about the length of a football field. These huge pontoons were floated and then towed into position, where they were linked by thick steel cables to anchors to hold them in place. The 62 anchors, buried deep in the lake bed, weigh about 77 tons each. Building the bridge cost a relatively modest $21 million ($154 million in today's money).

The bridge has a retractable drawspan in the middle that is raised to protect the structure from strong winds. But at 7,578 feet, the floating portion is essentially a 1.42-mile barge with a road on top of it.

That road is state Route 520, which links Seattle with Bellevue and Redmond, where a somewhat well-known software company later made its headquarters.

Seattle's growth, of which the tech boom is no small part, has put a huge load on the bridge. Designed to carry 65,000 vehicles a day, it now carries 115,000. That wear and tear, coupled with storm damage, has led to costly repairs.

Crews have patched more than 30,000 linear feet of cracks in the concrete pontoons since a huge storm on the day President Clinton was inaugurated in 1993. The drawbridge section got stuck in the open position for a while in March 1999.

The Washington State Department of Transportation says if the bridge were to sink, the average commute between Seattle and Redmond would increase from its current 33 minutes to 55. WSDOT has determined that retrofitting the Evergreen Point Bridge to current seismic and safety standards would be more expensive than building a new one.

So, it plans to construct a new floating bridge just north of the current one, starting next year. The new Evergreen Point bridge would have six lanes (plus a bike and pedestrian path) instead of four, cost about $4 billion, and open in 2014.

Perhaps they'll call it Evergreen 2.0, or Evergreen 2-Pont-0.

Source: Various

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Will bloodmobiles soon be a thing of the past, like vacuum-tube televisions and glass milk bottles delivered daily?

More important: Will the use of embryonic stem cells, which became a heated issue during the 2004 presidential election, finally produce a breakout product? One that will squelch the controversy for all but a few die-hards who still prefer their milk in glass bottles?

Researchers at Advanced Cell Technology in Worcester, Massachusetts, announced the breakthrough a few days ago. Working with scientists from the Mayo Clinic in Rochester, Minnesota, and the University of Chicago, A.C.T.'s team says it has developed a method for making potentially unlimited and scalable supplies of synthetic blood from embryonic stem cells.

The findings are published in Blood, a scientific journal. A.C.T.'s chief scientific officer Robert Lanza led the team.

If the claim holds up to scrutiny, it would be a huge boon for humankind, which until now has had to collectively open its veins to provide tons of this basic stuff of life for people who need extra blood because of injuries, surgeries or disease.

The discovery also would remove the danger of blood being tainted by pathogens that cause hepatitis, H.I.V. and Creutzfeldt-Jakob disease, among other viruses and bacteria.

But will this promise become reality?

Advanced Cell Technology has made incredible claims before. Under recently departed C.E.O. Michael West—whom some critics compared with the circus promoter P.T. Barnum—the company routinely asserted that stem-cell therapies were likely to reverse the aging process and grow replacement body parts, while most scientists were talking a more cautious line.

The company was the first to clone an endangered species, an Asian bovine called a gaur, which died soon after—possibly from causes unrelated to the cloning. A.C.T. also claimed it had cloned the first human embryo, attracting worldwide attention, though the embryos grew to only a few cells in size.

Some blame the company's over-enthusiasm for playing into the hands of stem-cell opponents in the Bush administration and elsewhere who were bent on squelching this new therapy. President Bush severely restricted federal funding for stem-cell research in 2001—restrictions that remain today, and are likely to until the next administration takes office.

Under Lanza, the company may not have fulfilled all of the promises made by West, but it has produced a string of solid discoveries and observations—though none have proved to be commercially viable. Most recently, Lanza's team has also induced stem cells to grow into retinal cells in eyes.

Creating synthetic blood has proved difficult; decades of efforts have so far been in vain. Several potential products are being tested in human clinical trials, most of them focusing on the critical function that blood plays in transporting oxygen. Other products, however, have been abandoned when they either didn't work, or proved to have dangerous or deadly side effects.

Blood created by stem cells is very similar to the real thing, and may avoid the pitfalls with other, more artificial techniques. If further tests confirm A.C.T.'s discovery—and, critically, show that the process is scalable and affordable—stem-cell blood may make the company more attractive to investors as it desperately seeks cash to carry on.

In July, a filing with the Securities and Exchange Commission revealed that A.C.T. had $17 million in current liabilities, but only $1 million in cash and other current assets, the Boston Globe reported. A.C.T.'s stock has been trading at 6 cents per share, down from $8 per share three years ago.

It's hard to know what the new techniques will cost once scaled up, or what revenues the discovery will bring in; Lanza says that he expects the company to know within two years if the processes will work.

Independent scientists are hopeful that the discovery will pan out. "The problem with relying on donated blood is that there are always shortages," Professor Alex Medvinsky, a blood stem-cell expert at the University of Edinburgh, told the Times of London. "The ability to generate red blood cells in very large numbers would be a very big thing."

AP - Barack Obama will stand before delegates and the nation Thursday — the 45th anniversary of Martin Luther King Jr.'s historic "I Have a Dream" speech — to accept the Democratic presidential nomination, the first black man to claim such a prize.

AP - Sen. Barack Obama dropped in on his own party at the Democratic convention a day early Wednesday to praise his wife, his former rival, and former President Bill Clinton for going to bat for him.

AP - Suspected militants bombed a bus carrying prisoners in northwest Pakistan on Thursday, killing at least nine people, as fighting between security forces and extremists flared across the country's tribal belt.

AP - National Guard troops stand ready, batteries and water bottles sold briskly, and one small-town mayor spent a sleepless night worrying. The New Orleans area watched as a storm marched across the Caribbean on the eve of Hurricane Katrina's third anniversary.