The 3D brick approach to self-assembly at the nanoscale is based on short synthetic strands of DNA that form building blocks, which self-assemble into 100 different, precise 3D shapes such as letters and numbers. Like the models of 80 of these shapes shown here, each unique shape measures about 25 nm per side.
Yes, I agree, Ann, that many companies are now serious about sustainability. While this movement in corporate culture may have originated in the PR discipline, many companies now have sustainability executives whose mission is more than just an effort to give their company a public facelift. It's good to see.
Rob, I think you may be right about the generational aspect. Although it's also true that any company doing its duty as a corporate citizen publicizes its good deeds, and sustainability sells. I don't see anything wrong with all that. But that doesn't imply that a company is only being sustainable for PR purposes, which some commenters have implied in past discussions about green anything. Some companies, such as DuPont, have places sustainability at the core of their corporate values.
Good point, Ann. There may be a generational aspect to this as well. I've noticed over the past 10 years that many large companies have serious initiatives to be good citizens -- from green fiendly to lifestyle friendly. These efforts seem to be mostly coming from young executives who grew up hearing about the importance of a healthy environment and social responsibility. I think this upcoming (and sometimes in place) generation may help the corporate vision look beyond the next quarter. If so, that vision will need to be communicated well at the company's highest levels to combat the knee-jerk reactions from the analyst community. I think this is already happening at companies such as Texas Instruments.
I think it's not surprising that ROI trumps everything else, but I also think it's not necessary. However, I think it's the shareholders, not the analysts, who make a difference. True, many shareholders simply follow the analysts' advice. So you've got a good point there. But it's also true that shareholders, especially ones with a lot of money, have made it possible for these alternative sustainable funds to come into being and proliferate. As a shareholder (via some mutual funds), I voted with my feet, so to speak. The more people who do that, the more responsible CEOs and their companies will be rewarded for social and environmental responsibility.
I'm glad to hear your view of social value, Ann. Me too. But the acid test will be whether that message gets to the analyst community. So far, companies have been rewarded for sending production to China and moving their headquarters to the Caribbean. Until CEOs are rewarded for instilling social values, they will continue to be bottom line creatures.
There are some promising developments. TI and many other companies are building factories at home again. They're still arguing the moves from a bottom-line perspective, however.
Rob, I disagree with that argument. For one thing, it assumes the company operates in a social, cultural and economic vacuum. Since when does superior ROI always trump everything else? Since MBAs started running US companies. I think this is a larger cultural issue. Social responsibility has become a big deal, inside and outside corporations. For instance, I've been learning about socially responsible investing and have shifted most of mine toward companies that value other things in addition to ROI.
Interesting, Ann. I have mixed feeling about this. I hate to see the human jobs get displaced, but to do otherwise -- keep humans when robot ROI is superior -- would be subsidizing human labor at the expense of shareholders. How long can a CEO do that before the analyst community asks for his or her head?
Although plastics make up only about 11% of all US municipal solid waste, many are actually more energy-dense than coal. Converting these non-recycled plastics into energy with existing technologies could reduce US coal consumption, as well as boost domestic energy reserves, says a new study.
This year's Dupont-sponsored WardsAuto survey of automotive designers and other engineers shows lightweighting dominates the discussion. But which materials will help them meet the 2025 CAFE standards are not entirely clear.
Artificially created metamaterials are already appearing in niche applications like electronics, communications, and defense, says a new report from Lux Research. How quickly they become mainstream depends on cost-effective manufacturing methods, which will include additive manufacturing.
SpaceX has 3D printed and successfully hot-fired a SuperDraco engine chamber made of Inconel, a high-performance superalloy, using direct metal laser sintering (DMLS). The company's first 3D-printed rocket engine part, a main oxidizer valve body for the Falcon 9 rocket, launched in January and is now qualified on all Falcon 9 flights.
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