Most recent

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  Stay Up Late: 'It's important to be able to have an active social life'

  7 Sep 2014:

  Kathryn Bromwich on Stay Up Late, a volunteer 'gig buddies' scheme for people with learning disabilities

• Mazí Mas: 'We're changing women's lives – with their own food'

  7 Sep 2014:

  Kathryn Bromwich on the migrant women's pop-up restaurant started by Niki Kopcke

• Cocktails in Care Homes: 'It's an occasion, people wonder what to wear'

  7 Sep 2014:

  Corinne Jones on Cocktails in Care Homes, a project that brings drinks, entertainment and company into the lives of elderly people

• Bristol Together: 'You have to invest in people for the long term'

  7 Sep 2014:

  Kathryn Bromwich on Bristol Together, the construction business that employs ex-offenders

• More of the best new radicals

  7 Sep 2014:

  From a gravity-powered light for the developing world to cabaret nights for scientists, green gap years, coffee bio-power and more of the best bright ideas

• Nightriders: 'Our support is designed around empathy and openness'

  7 Sep 2014:

  Killian Fox on Lauren Currie's support network for first-time entrepreneurs in Scotland

• Buffalo Grid: 'If you need a doctor, or you've been robbed, you need a phone'

  7 Sep 2014:

  Kathryn Bromwich on Buffalo Grid, an initiative that provides access to electricity to people in rural areas of Uganda

• New Radicals 2014: contestants are flooding in

  8 Jun 2014:

  More than 500 entries offering inspirational ideas have already been submitted for the Observer/Nesta project

• Britain's new radicals 2014: how you can make a positive impact

  11 May 2014:

  In 2012, the Observer recognised 50 trailblazers who challenge the mainstream for the public good. Now, we're searching for this year's nominations, writes Yvonne Roberts

• Britain's new radicals show that the best ideas can't be stifled

  11 May 2014:

  Geoff Mulgan, the chief executive of Nesta, explains why we are launching a fresh search for the country's most exciting thinkers, activists and entrepreneurs

• Search is on for 50 radical ideas to transform UK

  11 May 2014:

  For the third year, the Observer and Nesta launched to find the top 50 people, projects and organisations offering innovative ways to tackle social challenges, writes Yvonne Roberts