So-called "invasive" species include plants and animals that have been brought from other parts of the world and harm native species, sometimes to the point of extinction. In today's Czech Science we look at two such aliens in the Czech Republic, the giant hogweed and the American mink, and at what exactly science can do to help tackle the problem.
While most Czechs know the devastating power of locusts only from biblical plagues, a group of pilots from East Bohemia have had first hand experience with the crop-devouring insects. In the spring of this year they had a chance to use their aerial spraying expertise in Algeria. Now the crews are ready for take-off again as the voracious insects once more hit parts of North and West Africa.