Five great new green innovations – from pop-up rodent tents to tyre dust traps

The Earth Optimism 2021 summit is showcasing practical conservation solutions. We look at the ways technology is making a difference

Collaboration is key to developing new ideas, and scaling those solutions up is essential for making good progress in any field. This week, Earth Optimism 2021, a global summit hosted online until 4 April by Cambridge Conservation Initiative, has been showcasing conservation innovations to help wildlife and nature.

The Cambridge conference is part of the Earth Optimism Alliance, a movement founded in conjunction with the Smithsonian Institution in the US, with hubs in Nairobi, Sydney and Rio de Janeiro, which brings people together from around the world to talk about what's working to protect the future of our planet.