pairs

Then, by combining pairs of those mutations, they created a Cas9 editor that lowered the error rate even further, to 1/36th the original amount.

Now she's campaigning for big brands such as Nike, Adidas and Puma to sell single shoes rather than pairs.

They all come in pairs or trios, with the images in each set similar but not exactly the same.

The same lasts could be used over and over again to make several pairs of shoes, as long as the heel height was the same.

The firm also introduced a so-called neural wristband that pairs with its Meta Ray-Ban Display glasses to allow users to carry out tasks like sending messages with small hand gestures.