Being an environmental activist can be a hard road to follow, especially when the financial interests of big business and the threat of arrest stand in your way. We spoke to five campaigners about what motivates them to take a stand.
Few people take on an issue so intensely that it envelops them. But Lisa Wriley was so fascinated by beverage containers that she became one – a character called Bev the Bottle.
Is your environmental enthusiasm waning? Check out our tips for staying a happy, active campaigner.
Get active with this guide to becoming an activist.
You're probably turned your lights out for Earth Hour before - but this year they're asking us to go beyond the hour. Who's inspired you to live more sustainably? Maybe you should nominate them for an Earth Hour award.