Alexa Varah is ​​an ecologist studying the environmental impacts of agriculture and how to reduce them, using fieldwork and models to estimate multiple outcomes of different farm management strategies. These include biodiversity, pollination, carbon stocks and water quality, as well as assessing economic and production outcomes. She has worked in U.K. agroforestry systems and conventional arable farms, recently focusing on estimating the economic impacts of herbicide resistance. Previously, she was a science teacher in U.K. secondary schools.