This article reflects on outdoor recreational science and its relationship with teaching, scientific dissemination, collecting, and geological tourism.

The number of species catalogued as fluorescent increases each day, and UV lights can help us to find some that are only active during the night, generating a wide range of creative resources to photograph them.

The life and work of the naturalist Alexander von Humboldt continues to fascinate, even today. His figure concentrates and synthesises the movements, ideas, and even the great contradictions of the time of profound change that was nineteenth-century Europe.