Mammography is a powerful tool for detecting breast cancer. An Italian study has revealed how it can be made even more effective. In this feature, Paolo Magliocco and Rossella Li Vigni explain what 3D mammography is. Stromboli and its frequent eruptions attract tourists from around the world. For Superquark, Barbara Bernardini went to see how volcanologists work to predict eruptions and ensure the safety of residents and visitors. A curious feature from our correspondents shows us strange prehistoric creatures, or alien monsters, that are actually just common insects, such as flies or mosquitoes, seen under an electron microscope. A tool used by "microscopic entomology" to reveal the secrets of these complex, and unloved, living beings.