Twitter Still Faces Challenges: Kirkpatrick

July 29 (Bloomberg) -- Redpoint Ventures' Ryan Sarver and Bloomberg Contributing Editor David Kirkpatrick discuss Twitter's earnings and user growth with Cory Johnson on "Bloomberg West." (Source: Bloomberg)
Mila Kunis Helps Miner Become Top Emerald Producer
02:18 - Gemfields CEO Ian Harebottle discusses the gemstone business with Bloomberg's Pimm Fox on "Taking Stock." (Source: Bloomberg)
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