An example of metaphor in popular science writing:
"The problem is we are setting up easy antibiotic assault courses all over the place by not finishing a course of antibiotics, or taking them unnecessarily providing a perfect training ground for bacteria to become resistant by exposing them to antibiotics again and again until some of them adapt instead of dying."
Catherine Carver
Carver, C. (2017). Immune. How your body defends and protects you. Bloomsbury Sigma. (Read about this book: 'Disease and immunity – a biological myth')
Read about metaphor in science
Read about examples of science metaphors
Many examples of science metaphors are listed in 'Creative comparisons: Making science familiar through language. An illustrative catalogue of figurative comparisons and analogies for science concepts'. Free Download.