Marte
The Best Place to Train Astronauts Exists on Earth, But Not Where You'd Think
In caves deep enough to hold entire cities, astronauts and 'cavenauts' are on a mission to prepare themselves for life on Mars.
Boko Haram Said to Recapture Nigerian Border Town as Islamic State Offers Praise
Boko Haram fighters reportedly seized control of a town in northern Nigeria on Friday, just as the Islamic State released images praising the militant group.
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