Windows 8 features the new fast and fluid Start screen that gives people one-click access to the apps and content they care most about.

ENGADGET: PSA: Windows 8 available to buy starting tonight

Poland were more fluid from the start at the Santo Antonio Sports Complex and soon had Wales goalkeeper Wayne Hennessey scrambling.

BBC: Wales 0-1 Poland

The Rhinos again looked less than fluid at the start of the second half but they extended their advantage on 50 minutes when the Hull KR defence failed to deal with McGuire's high kick and Senior and Hall combined to send Lauitiiti powering over.

BBC: Leeds 44-8 Hull KR

And what societies believe about how fluid they are matters almost as much as the reality: if America's poor ever start to believe they will never get rich, the place will be heading for trouble.

ECONOMIST: Class