* Done deal: Yahoo agrees to sell some Alibaba

* Biotech’s endangered species list: Mid-sized pharma

* Root canals: Is private equity driving dental abuse?

* Vinicius Vacanti: Things first-time founders regret saying

* Matthew Ingram: Facebook’s biggest problem is that it’s a media company

* Morning Call: U.S. futures turn positiveEuropean shares rebound and the Nikkei inches higher.

* E.J. Dionne: A choice of capitalisms

* Nauseating? Cory Booker backtracks on Bain

* Fred Wilson: The Darwinian evolution of startup hubs

* Public-private partnership: Obama, CEOs and food aid

* NASDAQ boss on Facebook IPO: “This was not our finest hour”

* Chris Anderson: The “real story” on TED and income inequality

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* Steve Blank: ‘The Golden Age of Silicon Valley is over, and we’re dancing on its grave.”