biodegradable

Though some moviegoers' powerful identification with "Avatar" may have inspired them to ponder the planet and rethink their carbon footprint, they likely missed the irony: millions of nonbiodegradable, plastic 3D glasses were reportedly distributed for the movie.

Luckily, cinemas may be on their way to adopting a more sustainable technology. Cereplast, an L.A.-based maker of bioplastics, has partnered with Oculus3D to create what appear to be the first biodegradable 3D glasses. Unlike current 3D glasses that are made using petroleum-based plastic, these will be manufactured with plastic derived from plant materials.

Cereplast and Oculus3D say they'… Read more

For years, people with broken bones have had to suffer through not only the pain of the break, but also the long process of healing, often with the help of titanium screws. Typically, patients must then undergo more surgery to remove the titanium.

When my mom broke her knee in the '90s, they rigged her with so many screws and bars that her X-rays looked more robot than human. She predicted rain with eerie accuracy.

This month, researchers at the Fraunhofer Institute for Manufacturing Engineering and Applied Materials Research (IFAM) in Bremen, Germany, are unveiling a new type of screw … Read more

A new sugar-based polymer could be used to make common food containers compostable at home right alongside your potato peels and egg shells.

A team of engineers and scientists at the Imperial College London led by Charlotte Williams in partnership with BioCeramic Therapeutics have created a degradable material from sugars derived from the breakdown of lignocellulosic biomass.

Williams noted in the group's announcement that while they're not the first to come up with a "biorenewable plastic," many of those have previously been made from sugar beet- or corn-based biomass.

It's a fairly accurate estimate.

In … Read more

The Gray Lady may someday arrive at your doorstep inside a "green" plastic bag.

A company that makes delivery bags for The New York Times and other major newspapers has designed a plastic bag to biodegrade within three months.

GP Plastics' PolyGreen bags are made with fossil fuels, as are their traditional polyethylene counterparts.

However, a chemical added during manufacturing enables the plastic to be digested by microorganisms. The bags are supposed to disintegrate within a few months outdoors or three years in a landfill when exposed to oxygen and ultraviolet light, leaving behind little but water, carbon … Read more

It's a fact of life in China that just about anything comes in a little plastic bag. That's all about to change: In what all reports are calling a surprise move, the central government has banned (translated) ultra-thin plastic bags and will require regular bags to be sold with a clearly marked price starting June 1.

This demonstrates the way the government can simply declare an end to a technology for environmental reasons, even a 1950s technology like plastic bags. Whether enforcement will actually end plastic bags is not something I care to guess about.

The key here … Read more

Crave presents this week's laptop news, in digest form.

Our Apple rumor of the week: A patent application describing collapsible ports, which would in theory allow for a slimmer laptop, prompted talk of the long-awaited ultraportable MacBook. Elsewhere in the rumor mill, Dell is reportedly poised to launch a 17-inch mobile workstation, the Precision M6300, at the end of the month. The workstation will supposedly include support for up to 8GB of system memory and an optional Blu-Ray optical drive.

In the world of actual products, Fujitsu announced two new tablets: the $999 LifeBook U810, which weighs 1.6 … Read more

You've seen picnic ware and household items made out of biodegradable plastic. Now, here's a notebook with a biodegradable chassis.

This Fujitsu LifeBook sports a chassis made from a plastic made from cornstarch rather than petroleum. It costs more, but it's green. Put the chassis in a landfill and it will go away over the course of months. Real plastic will take decades.

Producing the cornstarch-based plastic, which comes from a supplier, also results in 15 percent less carbon emissions. Those vials (pictured at left) to the side, by the way, show the progress from corn kernels … Read more