Plastic

Research from a team of US scientists is again raising doubt over the safety of “BPA-free” plastic products. The animal studies described in a new article suggest bisphenol S (BPS) “causes almost identical changes in gene expression” compared to BPA.

We've recently heard about a number of experimental antibacterial food-wrap films, that could replace conventional polyethylene. The latter does have some desirable qualities, though, so scientists have now developed a composite made from it.

With gold, beauty and weight are two sides of the same coin. Now, by mixing it with plastic instead of other metals, researchers have created a new form of gold with as little as one-10th the usual weight, but retaining the same purity.

Scientists tinkering with the chemical processes underpinning plastics recycling are continually uncovering new ways to put the discarded material to use. Here are five examples of such technologies that give hope of a greener future.

The bananas that we buy in stores grow off of a central trunk-like structure, known as the pseudostem. And while that part of the plant is typically discarded during harvesting, it may soon find use in a plastic that biodegrades and is recyclable.

Take a walk along the canal in Amsterdam’s Westerdok district, and you may see an unsightly mess of waste gathered at the edge of the canal. What you’re seeing is the work of a new bubble barrier, designed to stop plastic waste flowing out to sea.

BioBag World Australia and IG Fresh Produce have come up with an alternative to polyethylene wrap that can be used to keep cucumbers fresh.

The vast majority of plastic waste can’t be recycled, meaning it ends up in landfills or the ocean. To help curb the problem, researchers at Berkeley Lab have now designed a new type of plastic that can apparently be reduced right back to its molecular parts, before being remade over and over.

Most water in stores today comes in bottles made from petroleum-based plastic. After drinking the contents, too many of these bottles become a pollution problem. Cove is looking to change that with the launch of its biopolymer-based water bottles.​

The Ocean Cleanup barge is currently on its way to tackle the Great Pacific Garbage Patch, but it never hurts to find ways to reduce plastic before it gets into the sea. In that vein, Danish beermaker Carlsberg has announced the Snap Pack, a simple alternative to plastic six-pack rings.

A PhD student at Macquarie University in Sydney, Australia, has come up with a way to turn waste coffee into biodegradable coffee cups. It hinges on a process which converts mannose, the prevalent sugar in the grounds, into lactic acid which can in turn be used to make biodegradable plastics.

Single-use plastic straws are a massive environmental problem, with increasing calls to ban the ubiquitous plastic drinking tubes. At least one major source of the problem has heard these calls, with McDonald's committing to find more environmentally-friendly alternatives.