Now in its sixth year, World Challenge is a global competition aimed at finding projects or small businesses from around the world that have shown enterprise and innovation at a grassroots level. World Challenge is brought to you by BBC World News and Newsweek, in association with Shell and is about championing and rewarding projects and businesses which really make a difference.

The Jompy Stove is a lightweight and inexpensive stove-top device that sits between a cooking pot or an open flame to rapidly heat water. Invented by David Osborne, a plumber from Scotland, this incredibly simple technology could save millions who die from drinking contaminated water.

The Jompy is a win-win technology, where householders can cook a meal whilst killing bacteria in dirty water at the same time. Gravity pushes the water through the Jompy, and it even works on simple three stone fires, making it perfect for use in the bush. It's now being supplied to outlets in Kenya.

Voting Stage - 27th September 2010 – 12th November 2010

The finalists of World Challenge will be profiled on BBC World News in six 30 minute programmes. You can vote for your favourite project/business on this website. Voting will open on 27th September 2010 and will close at midnight (GMT) on 12th November 2010. Winners Announced - 4th December 2010

The Winner and two runners up of World Challenge will be announced in an awards ceremony held in the Netherlands. The awards ceremony will be broadcast on 4th December 2010 on BBC World News and announced on the website on the same day and profiled in Newsweek magazine in the 21st December issue which will be on sale on 14th December 2010