Over the recent challenging months, the young people of Christchurch have proven the value of seeking out youth voices, particularly relevant during the United Nations International Year of Youth.

UNESCO: Christchurch Youth Voices Challenge

There have been voices sceptical about the value of Pisa test comparisons and how they are used.

BBC: Schools can measure themselves against Pisa tests

We value deeply the ability to bring so many important voices together, so many diverse opinions, in search of a common goal.

WHITEHOUSE: VP Biden Welcomes Nuclear Summit Participants

Back in 2009, Mike Burrichter, a principal of CBRE Global Investors, was one of the few optimistic voices who said it still made sense to buy partially vacant buildings and add value by leasing them up.

WSJ: Deal of the Week: Flipping in Philadelphia