The project successfully reversed the Sager Antelope's path towards extinction by recreating habitats, demonstrating the potential for saving endangered species.
They clean public spaces in London, free of charge, and share their projects on social media, inspiring others to take action.
Graphene can detect cancerous cells in the brain using a chip the size of a postage stamp, distinguishing between healthy and cancerous cells.
They collected water from melting ice and shared a double sleeping bag to stay warm, eventually being rescued by fellow climbers.
His disclosure has led to a surge in people getting tested for prostate cancer and aims to change the perspective on living with terminal illness.
They are using their diving skills to monitor fish stocks and promote sustainable fishing methods, supported by marine conservation organizations.
The Earthshot Prize awards $1.2 million to innovative environmental projects globally, focusing on solutions to combat environmental challenges.
They used tiny treadmills to observe how vampire bats use the blood they eat to create energy, which could have implications for human high-protein diets.
We hear about innovative environmental projects awarded millions of dollars in this year's Earthshot prizes. Also: the twins cleaning streets for free; detecting tumours with graphene; and a remarkable Himalayan rescue.
Presenter: Andrew Peach. Music composed by Iona Hampson.