Homebase says it works "very closely with suppliers and in-store colleagues to ensure that customers are informed about how to reduce light pollution and considerate lighting when they purchase outdoor lighting".

BBC: Light pollution: Is there a solution?

"How to reduce the emissions from pollution sources is of paramount importance for improving our ever deteriorating air quality, " he says.

CNN: Lucien Gambarota: Alternative energy pioneer

How can we reduce the real threat to our health and ecosystems caused by ever-increasing water pollution?

UNESCO: MEDIA SERVICES