The atomic bombings of Hiroshima and Nagasaki capped six years of top-secret work by scientists from Europe and North America. Here is an overview of how that process unfolded.

Sixteen-year-old Linnet covers her face bashfully, mumbling into her hands as she recounts how she met the young man who bought her fries and gave her money, before leaving her pregnant and facing even greater poverty than before.

Instead of exploiting the wealth of data themselves, Europeans may be allowing American tech giants to gain control of all the excavation equipment.