Trees are often considered the silver bullet in our fight against global warming. But recent research has indicated a need for careful consideration when we plant and has called for a more nuanced approach. Other carbon sequestering organisms are equally worthy of our protection, such as marine algae. Help Our Kelp is a Sussex Wildlife Trust project which aims to restore our once lush underwater forest, through a 300-kilometre protection zone in which trawling is largely prohibited. Sir David Attenborough has described it as “a vital win in the fight against the biodiversity and climate crises”.