• It's Official: Yahoo Announces $170 Million Expansion in NY

  Yahoo will invest $170 million in an expansion of its data center campus in Lockport, New York, the company confirmed today. The expansion will include more of the company's distinctive Yahoo Computing Coops, plus a new 24-hour customer care call center.

• Modeling your App's User Session

  If you've been keeping an eye on your cookies, you may have noticed some recent changes GitHub has made to how we track your session. You shouldn't notice any difference in session behavior (beyond the new ability to revoke sessions ), but we'd like to explain what prompted the change. …

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• Google Data Center Spending Continues to Soar

  Google continues to invest heavily in its Internet infrastructure, recording a whopping $2.29 billion in capital expenditures in the third quarter of 2013, the company said Thursday.

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• Responsive maps with D3.js

  A challenge these days with visualization is that a piece might look great on a computer monitor and then break …

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• Scenes from O'Reilly Velocity 2013

  It was a busy week for the technology community in New York, including several conferences from O'Reilly Media. Check out our photo feature, Highlights from Cultivate and Velocity 2013, which covers activity at both of these o"Reilly events.

• Friday Funny: Is It Hot Enough for You?

  Happy Friday! Since it's Friday, that means it's time for our caption contest, with cartoons drawn by Diane Alber. Take a moment to suggest a funny caption for the cartoon.