Which Tech Billionaires Gave Back?

Feb. 11 (Bloomberg) -- On today's "Deirdre's Notebook," Deirdre Bolton reports on tech billionaire's philanthropy efforts. She speaks on Bloomberg Television's "Money Moves." (Source: Bloomberg)
Mila Kunis Helps Miner Become Top Emerald Producer
47:06 - Gemfields CEO Ian Harebottle discusses the gemstone business with Bloomberg's Pimm Fox on "Taking Stock." (Source: Bloomberg)
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