Most glasses and sunglasses on the market make use of metal or plastic frames. It’s relatively easy to create all manner of interesting frame geometries, tolerances can be easily controlled for ...

The data encompasses B2C enterprises. Figures are based on consumer spending on eyewear products, which include spectacle lenses, sunglasses, eyewear frames, and contact lenses that are produced ...

They were washed in with the tide, most likely from China or the US, thousands of miles away -- part of an enormous plastic garbage patch, spinning in the middle of the Pacific Ocean, which you ...

Planet or Plastic? is National Geographic’s multiyear effort to raise awareness about the global plastic trash crisis. Come to this page often to learn more, and find out what you can do to ...

Plastic is incredibly useful and practical – and everywhere. Our modern life depends on it. Strong, light and adaptable, it’s in everything from household goods, medical equipment and bank notes, to ...

In all likelihood you’ll spend more time unwrapping the plastic from each part than ... Flaws but not dealbreakers: Unpacking the frame’s three large boxes was an ordeal for us—it took ...

Despite global concerns over the accumulation of plastic waste, the drive to produce new plastics shows no signs of slowing down. According to OECD data, the world’s annual plastic production ...

Your photos deserve a better place than your phone screen. Get the lowest prices and the sharpest prints with the best photo ...

Lower-index lenses are cheaper but thicker and won't fit well in every frame. Related: 6 Tips for Buying Jewelry as a Gift ...

Frame structures can be used to make a suspension bridge. It's function is to cross large areas of land or ... of the helmet is usually made from plastic, because it is hard and strong.

Scientists have developed a "self-digesting plastic", which, they say, could help reduce pollution. Polyurethane is used in everything from phone cases to trainers, but is tricky to recycle and ...

Stachel, John 1972. The Rise and Fall of Geometrodynamics. PSA: Proceedings of the Biennial Meeting of the Philosophy of Science Association, Vol. 1972, Issue. , p. 31.