The rate of obesity in Britain has more than doubled since 1980, according to Tim Gill, secretary of an international task force that studies the subject.

ECONOMIST: That other national expansion

Tim Gill and Scott Miller, of Denver, Colo.

FORBES: Move up http://i.forbesimg.com t Move down

But writer and consultant Tim Gill, author of No Fear: Growing Up In A Risk-Averse Society and a former government adviser, believes that bullying is too often "misdiagnosed" and children should be encouraged to stand up for themselves before parents step in.

BBC: Letting children off the leash

From a gallery in The Post Family, a collaborative art space, Moving Designers heard from internationally renowned architect Gordon Gill and artist Matthew Hoffman (creator of the You are Beautiful project) to energy efficiency expert Tim Heppner and Ryan Wilson, the stormwater program manager at the Center for Neighborhood Technology.

FORBES: Sustainability, By Design