Tahrir Square one year on: the revolution through Arab eyes
Northern lights light up skies over northern England, Scotland
Huge geomagnetic solar storm continues to buffet planet
US Chinatown declines as wealthy Asians head out to suburbs
Closure of Mexico dump raises stink among scavengers
Leaning tower of Big Ben sparks fears among politicians
Nigeria fears onset of civil war as sectarian violence escalates
Teenager sails into record books with round-the world trip
Sanctions-hit Iran brushes off looming EU oil embargo