This Saturday, BBC World News will broadcasts the final programme of its popular World Challenge 09 series, announcing the 'safe bottle lamp project' as the winner.

The Sri Lankan initiative, pioneered by burns surgeon Dr Wijaya Godakumbura, produces inexpensive lamps from recycled glass as a solution to burn risks in developing countries.

Burns caused by makeshift kerosene lamps are a common problem in parts of Sri Lanka, where a fifth of the population has no access to electricity. These accidents often cause severe pain, scarring and sometimes even death.

To prevent these injuries Sri Lankan burns surgeon Dr Godakumbura designed a simple lamp using recycled glass, which can be easily mass produced at a low cost.

 The 'safe bottle lamp project'will receive a $20,000 prize grant from Shell. Details will also appear in Newsweek magazine.

''Over the last five years, the unique projects featured in World Challenge have continued to amaze and inspire BBC World News viewers," says Paul Gibbs, head of programmes, BBC World News."The competition's ongoing success and popularity illustrates an unwavering interest globally in the field of sustainable development.''

Two runner-up projects will each be awarded $10,000 by Shell. The first runner-up is Danamon Go Green, an Indonesian initiative dedicated to converting traditional market waste into organic compost to be distributed amongst local farmers.

The second runner-up is BTTR Ventures, an American project that aims to turn one of the largest waste streams in America into a highly-demanded, nutritious and valuable food product for local consumers.

Rhona Murphy, publisher and managing director, Newsweek International says, ''World Challenge continues to cast a wide net for sustainable ideas that benefit people - and the planet. Newsweek is proud, with partners Shell and BBC World News, to celebrate the fifth anniversary of this global call to action.''

Bjorn Edlund, executive vice president, communications, Shell says, "Organisations and businesses of all sizes, including Shell, are increasingly looking for technologies and ways of doing business that have a more positive impact on the environment. It's humbling to see so many small projects achieving this against such challenging circumstances and at Shell, we are pleased to honour and support all those involved in World Challenge, and particularly the winning project, for their outstanding achievements."

World Challenge is a global competition rewarding grass roots projects that give something back to their communities. It is run by BBC World News, the BBC's international news channel, and Newsweek, weekly global current affairs magazine, in association with Shell.

To mark the fifth anniversary, this year's series included a special celebratory programme, World Challenge Five Years On, looking back at previous winners and how the projects have developed since.

The final programme will air on BBC World News this weekend, showcasing the presentation ceremony hosted by the BBC's award-winning presenter Zeinab Badawi.