Full story here.

Matt Rourke / AP
Firefighters inspects the aftermath of a fatal explosion in a residential neighborhood in Allentown, Pa. on Feb. 10.

Matt Rourke / AP
Firefighters inspects the aftermath of a fatal explosion in a residential neighborhood in Allentown, Pa. on Feb. 10.
Full story here.

Kate Penn / AP
Rich Brandt, crew leader with York Tree Service Inc., cuts branches off a tree that sagged onto a power line from ice accumulation in Newberry, Pa., Wednesday, Feb. 2, 2011.
See more images from the storm here.

Jeff Swensen / Getty Images
Groundhog handler Ben Hughes watches Punxsutawney Phil after he did not see his shadow predicting an early spring during the 125th annual Groundhog Day festivities on Feb. 2 in Punxsutawney, Pennsylvania.

Jeff Swensen / Getty Images
A smaller than usual crowd this year of less than 15,000 people spent a night of revelry awaiting the sunrise and the groundhog's exit from his winter den.

Jason Cohn / Reuters
Official Groundhog Handler John Griffith, left, holds famed weather prognosticating groundhog Punxsutawney Phil as he makes his annual prediction to Groundhog Club President Bill Deeley, right, on Gobbler's Knob in Punxsutawney, Pennsylvania.

Jeff Swensen / Getty Images
Fireworks light up the sky above the crowd.
Including today's forecast, Phil has seen his shadow 98 times and hasn't seen it just 16 times since 1887.

Keith Srakocic / AP
Unit director Leslie Gostic, top left, and nurse, Samantha Bigam, arrange newborn infants at Magee-Womens Hospital of UPMC in Pittsburgh, Friday, Jan. 28. Seven babies, all one or two-days old, are wrapped in the Pittsburgh Steelers fan favorite "Terrible Towel" in the ward. The Steelers will be facing the Green Bay Packers in Super Bowl XLV on Feb. 6, 2011 in Arlington, Texas.
These little guys and girls will one day honestly be able to say they were Steelers fans from birth.

Matt Rourke / AP
Ira Abney negotiates snow-covered subway stairs in the aftermath of a winter storm in Philadelphia, Thursday, Jan. 27.

Matt Rourke / AP
Fracking opponents protest before the Tom Corbett inauguration to become the 46th governor of Pennsylvania at the state capitol in Harrisburg, Pa., Tuesday, Jan. 18, 2011.
Fracking is short for hydraulic fracturing, a process used to increase the flow of oil and gas from underground wells. According to this article about the controversy over fracking, incoming Governor Tom Corbett is seen as friendlier to the gas industry than outgoing governor Ed Rendell. Here's some more info about the Marcellus Shale rock formation, where the drilling is taking place.

Vinny Tennis / Lancaster Newspapers
Brad Matchett, of Glen Allen, Va., uses a leaf blower in his Agricadabra, The Magic of Agriculture show at the opening day of the 95th Pennsylvania Farm Show in Harrisburg, Pa., on Saturday, Jan. 8. Matchett uses the blower to blow up a giant balloon.
I hope that my dental hygienist doesn't get wind of this technique.

Matt Rourke / AP
Members of the Polish American String band perform during the Mummers Parade in Philadelphia, Saturday, Jan. 1.
When I think of New Year's Day, the Rose Parade, which got its start in 1890, is one of the first things that comes to mind, but apparently the Mummers Parade in Philadelphia has been around for over 100 years. Read more about the Mummers Parade here.

Gene J. Puskar / AP
Olivia Bartle, 5, of Mt. Lebanon, Pa., takes advantage of temperatures in the fifties to play on the playground at Mt. Lebanon Park, in Mt. Lebanon, Pa. Monday, Nov. 29, 2010.

Jenny Kane / The Patriot-News via AP
In this photo taken Nov. 23, 2010, Anthony Calabrese, right, and his uncle, Demenico Calabrese, look at trees during one of the nation's largest Christmas tree auctions in Mifflinburg, Pa., about 60 miles north of Harrisburg. This farming community invented a brand of Thanksgiving-week shopping frenzy others would love to emulate. Call it Black Tuesday. Tuesday, a mob of shoppers lined up not outside a department store, but behind an auctioneer. The mob followed him all day through fields piled high with Christmas trees. Some bought by the dozen, some bought by the truckload.
Have you bought your tree already?

Gene J. Puskar / AP
Penn State coach Joe Paterno is carried off the field by his players after getting his 400th collegiate win in an NCAA college football game over Northwestern 38-21 in State College, Pa., Nov. 6.
How amazing it is that Joe Paterno is still coaching at the age of 83 and doesn't seem to have any intention of retiring any time soon. He has been at Penn State his entire coaching career, either as an assistant or as a head coach. Read more here.

Jim Young/Reuters
A book thrown onto the stage narrowly misses U.S. President Barack Obama at a rally at Vernon Park in Philadelphia on Sunday, Oct. 10. A U.S. Secret Service agent, bottom right, appears to watch as the book flies over the stage. Obama, kicking off a busy week of campaigning, strove to energize his base on Sunday in order to minimize losses for Democrats in the November elections.

Saul Loeb/AFP-Getty Images
In this photo, the book can be seen flying behind Obama's right shoulder.

Saul Loeb/AFP-Getty Images
The book continues on its path (top right).
Inquiring minds would like to know who hurled a book at President Obama on Sunday at a rally in Philadelphia. After looking at the photos, can you name the book?
The U.S. Secret Service spoke with the book-thrower and described him as over-exuberant. You can watch a video of the incident HERE.
This is slightly reminiscent of the Iraqi reporter Muntadhar al-Zeidi who threw a shoe at former President Bush during a press conference in Iraq in December 2008.