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Dangerous electricity pylons, the main threat to eagle owls: scientists sound the alarm and call for a national clean-up campaign . We've known for a long time that power lines represent a serious handicap for large birds: for example, a third of our Storks die as a result of a collision with a cable or electrocution.

Using a simple chemical method, researchers have succeeded for the first time in growing graphene ribbons just a few nanometers wide on specially prepared surfaces. Graphene ribbons are seen as highly promising candidates for electronic applications, as their properties can be varied according to their width and the shape of their edges .