The outer layer, or cladding, is plain silica, while the core is doped with germanium.
ECONOMIST: New-age crystals
The plain truth is that the Yahoo core business was in a terrible place a year ago.
FORBES: An Open Letter To The Marissa Mayer Haters
This is just plain wrong and the BBC really needs to examine it's core values and remember its motto: "Nation Shall Speak Truth Unto Nation".
BBC: NEWS | Have Your Say | What now for the BBC?
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