Scientists have captured rare insights into Mars’s north polar vortex, where temperatures plunge far below those outside its boundaries and darkness triggers an unusual surge in ozone. New observation ...

It's not the first time there have been claims of signs of life on Mars, so why are scientists particularly thrilled now?

Something strange is happening in the frozen skies above Mars’s North Pole. Deep in the planet’s endless winter darkness, where temperatures drop to unthinkable lows and sunlight never reaches the ...