We want to do with you a curious mental experiment with its own name: the Silurian hypothesis in which we presuppose the possibilities that a civilization had existed before we appeared.
Liquid water is an important prerequisite for life to develop on a planet. Now, a new study shows that liquid water could last on worlds other than our own: it could exist for billions of years.
Danni Büchner is invited to Sam Dylan's Halloween party. But the "Goodbye Germany" emigrant has no desire for many other party guests. And find clear words.