Earth Friends Series 4 Books Collection Set by Holly Webb Fair Fashion, River

Researching her school project on Fairtrade has been a real eye-opener for Maya. She loves clothes and is appalled to find that her favourite sparkly T-shirts are made by poor children in other countries who lead very different lives from her own, privileged one. She knows she must do something about it, but how can she make a difference without revealing her pop star secret to the world?

Izzy and Poppy are being taken for a walk along the river by Poppy's boisterous dog, Billy, when he decides to chase after a water-rat. Both animals land in the river, which is so choked with rubbish that Billy can't get out. His paw is stuck in an old bike wheel and the girls must work to free him. The adventure gives Izzy a great idea for their next project, though, and it's a very very muddy one...

There's a sad, neglected part of the playground at Poppy's school. She's desperate to win the competition to transform it and she's got some great ideas - a sensory garden, a hedgehog crossing, flowers to attract bees - but then she's accused of copying! Can Poppy clear her name and create the garden of her dreams?

Emily loves animals. But she comes from a big family and there's no room for any pets. So she decides to help at the local animal rescue centre instead. When the rescue centre comes under threat, can Emily and her friends make sure all the animals don't end up homeless?