My main interest is in the application of analytical chemistry to solving environmental problems. We are currently facing three planetary crises: climate change, loss of biodiversity, and pollution. I am convinced that analytical chemistry can help solve these problems. For example, it is important to assess contaminants in all environmental and biological matrices, which requires accessible and reproducible analytical methods that enable this assessment and lead to actions to mitigate exposure throughout life. In recent years, I have taken a special interest in molecular imprinting polymers. These materials simulate the lock-and-key effect found in antibodies, meaning that they are capable of recognizing, at the molecular level, the chemical structures for which they were designed. As such, they offer analytical advantages such as preconcentration, cleanliness, and reduced matrix effects, which facilitate the measurement of compounds.