Why do billions of people still not have glasses?

It's thought 2.5 billion people could benefit from technology first developed in the 1200s.

from BBC News - World https://ift.tt/2QyNLMJ
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Mercenary and coup plotter Simon Mann dies

He was arrested in 2004 after being part of a failed coup to overthrow Equatorial Guinea's ruler. from BBC News https://ift.tt/kOAdKUH...