The common perception of what scientist generally do probably includes making discoveries. But, in fact, the real life of a scientist mostly consists of collecting data, analyzing and interpreting data, reading and writing articles. Rarely are these activities interrupted by making discoveries, but it does happen.

While at Oxford, we began a project that investigated how lizard embryos in non-native populations in England cope with the cool climate. Unlike birds, who care for their offspring, most lizards bury their eggs in the soil. To study the adaptations that allow wall lizard embryos to develop at low temperatures, Nathalie spent most of the spring 2015 dissecting lizard eggs. Under the microscope, she opened the leathery egg shell with fine dissection tools and carefully detached the tiny embryo from the yolk. And she did this for hundreds of eggs.

The routine was disturbed one day by an odd discovery: in one of the embryos, Nathalie saw that something worm-like was wriggling in the brain of a baby-lizard! The discovery raised lots of excitement among her colleagues, but it also raised lots of questions: Why is the worm there and what is it actually? How did it get there – was it an accident or is this how the worm lives? Can the baby-lizard survive with worms wriggling in its brain?

Since we are lizard biologists rather than worm biologists, we teamed up with people who know more about nematodes with the aim to answer at least some of these questions. The result of this research can be read in our recent publication in the American Naturalist and we also wrote a little blog post that explains what answers we found. It is super cool and hopefully someone wants to pick this up and continue from where we left it!