Tensions on the Syria-Turkey Border

Attacks by Russian and Syrian Government forces on Turkmen rebel positions near Latakia on Tuesday have been described by some as 'revenge' for the downing of a Russian fighter jet. The BBC's Nafiseh Kohnavard reports from the Syria-Turkey border.

It is estimated that over eight million people living in the UK were born outside its shores. Many retain links to their homelands and their UK-born children grow up with roots in both countries. Nancy Kacungira in Ghana examines why a growing number are deciding that Africa is the place to be.

American scientists have uncovered one of the secrets of the microscopic organism the Tardigrade (also known as a 'water bear'). One-sixth of its DNA is foreign.