The Ticker: Glenn, Biden, McFadden…

> Veteran CBS Newser Christopher Glenn is “hanging up his microphone” after 35 years. CBSNews.com looks back…

> I missed this on Wednesday: The Observer explores the slow migration of television news to HDTV…

> “I’m going to give it a shot:” This morning on Fox & Friends, Sen. Joe Biden told Brian Kilmeade that he’s planning to run for president in 2008… Update: 12:12pm: An e-mailer asks: “How is this news? Sen. Biden announced that he’d be running for president months ago on ‘Meet the Press.’”

> Friday on Nightline: “Cynthia McFadden traveled to Houston to see first-hand how Texas Children’s Hospital is tackling” childhood obesity…

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