A new study led by the University of Bern has discovered a large number of bright streaks, also known as "lineae", on Mercury, which are presumably caused by the outgassing of volatile material from the planet's interior. This indicates that Mercury is not a dead planet, as previously assumed, but might in fact be geologically active. The results provide important insights into the evolution of Mercury and its volatiles and will be further investigated by future space missions such as BepiColombo.