By Reality Check team
By Erin Osgood
BBC Young Reporter
By Tom Edwards
Transport and environment correspondent, London
An exhibition in London wants to show people what how the air quality compares in some world cities.
Costa Rica and two best friends who grow coral are among the five winners. The annual awards - created by Prince William - reward projects trying to save the planet.
India's ironing vendors use charcoal as fuel, but Vinisha Umashankar's cart harnesses the Sun's energy.
There have been thousands of complaints from residents of a strong unpleasant odour at Walleys Quarry.
BBC Midlands Today
Residents and business owners in Kings Heath, Birmingham, will get their first chance today to react to plans to extend a controversial traffic calming scheme.
Parts of the area were made a Low Traffic Neighbourhood, funded by money from central government, which prevents cars going through the filters on nine local roads.
And a pedestrianised area has been created on York Road.
But some residents said it had turned to annoyance.Copyright: BBC
Birmingham City Council has revealed proposals to close more roads in the area to make it safer for cyclists and pedestrians.
It is holding an online briefing on the plans at 18:00 BST.