There was clearly a marked contrast between Wales and the Wallabies - the visitors' improvement was only matched in scale by Wales' deterioration.

BBC: Fans disappointed by Wales slump

In contrast to many rivals, Ms Winfrey has made self-improvement a part of her brand.

ECONOMIST: Dumbing up

Even so, fatal accidents, measured by the number of flights, are commonest in Africa and there, in contrast to the rest of the world, no sign of improvement is yet detectable.

ECONOMIST: Africa��s unfriendly skies

By contrast, in the renewable space, there is enormous opportunity for improvement, and the pace of change is breathtaking.

FORBES: Clean Energy Innovation: An Unstoppable and Volatile Force

In contrast to last year's Aspire S3, which costs about half the price, the S5 marks an improvement in craftsmanship, with magnesium alloy now covering the lid, bottom and palm rest.

ENGADGET: Acer Aspire S5 review: is this innovative Ultrabook worth $1,400?