In the era of shrinking airline seats and oversold flights, eking out even an extra inch of space in an ultra-crammed economy cabin can feel like a major win. One trick that can help you calculate the ...

In 1834, a 22-year-old Yoruba man who would come to be known as Manuel Vidau was captured as a prisoner of war and sold to slave traders in Lagos, today the largest city in Nigeria. A Spanish ship ...