Indonesia’s Kawah Ijen volcano appears to glow electric blue at night, but the colour does not come from lava. Instead, ...

Few natural wonders are as breathtakingly surreal as the electric blue flames dancing across Indonesia's Kawah Ijen volcano.

That behavior underpins new work on a concealed trigger for volcanic explosions, which describes how subtle shifts in the internal structure of the magma column can prime a volcano for a sudden blast ...