The 2012 Summer Olympics in London starts in four days with the carefully choreographed opening ceremony. But a related spectator sport is already well underway: Dissecting the economic impact of the games.

A show we did in February looked at how big an economic boost cities really get from hosting the Superbowl, and much of the same analysis is being applied to this year's games.

Stocks fell sharply on Wall Street this morning as traders reacted to word that Europe's debt crisis may be deepening and that China's economy may slow, Bloomberg News says.

The Dow Jones industrial average was down more than 200 points, or a little less than 2 percent, after an hour of trading. Other indices were also off.

Saying that the punishment is "warranted by the conspiracy of silence" among Penn State University's top leadership that turned a blind eye to former assistant football coach Jerry Sandusky's sexual abuse of young boys, the NCAA just announced sanctions on the school that include:

-- A $60 million fine. The money will go into an endowment fund to support programs around the nation that assist victims of sexual abuse, NCAA President Mark Emmert said.

President Obama and Mitt Romney this week will be courting military veterans and raising more money. Romney also will be taking his campaign overseas.

Both speak at the annual convention of the Veterans of Foreign Wars in Reno, Nev. Obama will address the group today. Romney speaks to the group tomorrow, before heading to London for opening ceremonies of the Summer Olympics.

Ten years ago, Romney ran the Winter Olympics in Salt Lake City, Utah.

Good morning.

The nature of the news today has made the subjects of our early posts unfortunately grim:

-- Dozens Dead After Iraq's Bloodiest Day This Year.

-- 13 Reported Dead, 10 Injured After Pickup Crashes In Texas.

The death toll keeps rising and is now said to be around 100 after a series of bombings and shootings today in Iraq. More than 200 people were wounded in what appear to have been coordinated attacks in at least 13 cities. According to The Associated Press, it has been that nation's "deadliest day so far this year."

A pickup truck overloaded with 23 men, women and children who authorities suspect were in the country illegally crashed Sunday in south Texas. There are reports now, from KSAT-TV in San Antonio and other local news outlets, that 13 people are dead and 10 injured.

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STEVE INSKEEP, HOST:

It's MORNING EDITION, from NPR News. I'm Steve Inskeep.