They can burn and blister your skin, stop you from getting a mortgage, and even kill you. Plants and animals carried around the world by tourists and trade are costing the European Union over EUR 12 billion per year. Even these estimates are conservative as the data relates mostly to land-based invasive species.
It is about two in the morning and while most Europeans are tucked up in bed, the sleep-deprived crew members of the Pegasos Zeppelin are preparing for take-off. Weather conditions are perfect so they load the airship with their state-of-the-art equipment and get ready to start their day’s work.
To find out, scientists are investigating fish gut bacteria and feed nutrients.
Meteorologist Jadranka Šepić is working to decipher waves that can destroy in minutes.
Dr Kate Rychert studies ocean plate structures.