A holistic “One planet: one health” approach is necessary because climate, biodiversity and pollution crises are interrelated and need to be tackled together for policies on those areas to be efficient. As an example of this, scientists warn of the combined effects on chemical pollution and climate change on biodiversity. Chemicals can affect biodiversity’s future resilience with threats that are posed by climate change, like higher temperatures or increased drought conditions. Climate change can affect the fate and toxicity of chemicals in the environment, for example by influencing the pH and with it the uptake and bioavailability of chemicals. The European Commission must act on pollution and not delay the legislation on the sustainable use of pesticides.