Pietro Izzo / Flickr--CC

The former operators of a large egg farm in Iowa have agreed to plead guilty to federal charges in connection with a major salmonella outbreak in 2010.

Federal officials have charged Austin “Jack” DeCoster, his son Peter and their company, Quality Egg, with allowing the salmonella-contaminated eggs to reach consumers. They’re also charged with mislabeling eggs and attempting to bribe a USDA inspector. More than 500 million eggs were recalled and at least 2,000 people became sick from the outbreak.

Missouri Attorney General Chris Koster along with five other attorneys general have filed a lawsuit against the State of California for its regulations regarding cage sizes for chickens.

The original legislature, Proposition 2, was passed in 2008, which required cages to be nearly twice as large as most standard chicken cages. The follow up law requires all eggs sold in California to comply to these same conditions.

It all starts with the egg.

In spring, chickens start laying again, bringing a welcome source of protein at winter's end. So it's no surprise that cultures around the world celebrate spring by honoring the egg.

Some traditions are simple, like the red eggs that get baked into Greek Easter breads. Others elevate the egg into an elaborate art, like the heavily jewel-encrusted Faberge eggs that were favored by the Russian czars starting in the 19th century.