After its much-ballyhooed initial public offering on Friday ended with the stock's price just about where it started, Facebook ended sharply lower today.

Just after the start of trading, the social media giant's shares were trading around $33, down 13 percent about $5 from Friday's close. At close, it ended 11 percent lower at $34.03.

Examining the toll that building and servicing America's cellular infrastructure is taking on cell-tower workers, who are 10 times more likely than an average construction worker to die on the job. Also: a report on the reliability of expert testimony.

Airs Tuesday, May 22 at 9pm on Channel 5.

Items include an 1863 U.S. Grant letter; a circa 1950 "Li'l Folks" cartoon by Charles Schulz; and two paintings purchased together for five dollars that are valued at $75,000. Also: collecting flashlights is discussed.

Hour 3, Airs May 21 at 7pm.

Good morning.

Our early headlines:

-- Dozens Killed By Suicide Bomber In Yemen.

-- Pakistan Threatens To Overshadow NATO Summit.

-- Eclipse Of The Sun: Did You Fall Into The Ring Of Fire's Path?

As President Obama and other NATO leaders wrap up a two-day summit today in Chicago, the ongoing dispute with Pakistan over reopening supply routes from that country into Afghanistan threatens to "put a crimp in the Obama administration's efforts to lay out a clear strategy for winding down the war in Afghanistan," NPR's Jackie Northam tells our Newscast desk.

It's been another deadly day in Yemen:

According to the BBC: "At least 63 people have been killed in a suicide bomb attack during a rehearsal for a military parade in the Yemeni capital, Sanaa, officials say. The assailant, who was reportedly wearing an army uniform, blew himself up among a group of soldiers at al-Sabin Square, near the presidential palace."

New York has its first million dollar parking spot. The 12 by 23 foot space in lower Manhattan's East Village comes with its own deed and maintenance fees just like the luxury condo it's attached to. The New York Post calculates the investment this way: It's the same as paying $115 parking ticket every day for the next 24 years.