A paragliding Greenpeace activist who dropped a smoke bomb over a French nuclear reactor on Wednesday added a new element to the presidential race there -- and raised the question of whether the same, or worse, could happen at a U.S. nuclear reactor.

"At no moment was the safety of the installations at risk," said the plant's operator, French utility giant EDF, adding that the pilot was arrested by security staff at the Bugey nuclear plant in southeast France.

EDF acknowledged that a second activist was arrested at another nuclear site in southwest France after entering via a truck gate and hiding for an hour in brush within the "surveillance zone," Reuters reported.

Greenpeace said it was raising awareness of nuclear power issues ahead of France's presidential elections on Sunday.

It "illustrates the vulnerability of French nuclear to the threat of air attack," Greenpeace France spokeswoman Sophia Majnoni d'Intignano said in a statement. "While Germany took into account the aircraft crash in its safety testing, France still refuses to analyze this risk for our plants."

France, which gets 80 percent of its electricity from nuclear power, pledged special safety tests at its 58 reactors after Japan's Fukushima nuclear disaster in March 2011.

Those tests include standing up to floods, earthquakes, power outages and cooling system failures -- but not terrorist attacks or even a plane crash.

So could a paraglider attack happen in the U.S. -- or would it be shot down before even getting to a nuclear site?

"Completely speculative," Steve Kerekes, a spokesman for the Nuclear Energy Institute, told msnbc.com. "Our facilities are extremely well-defended. Let's leave it at that."

Over at the Union of Concerned Scientists, a group that says it's neither for nor against nuclear power, two nuclear experts said that while a reactor's containment dome would be hard to penetrate other targets are available.

The intake structure, where water is brought in to cool the reactor fuel, "is an easier target," Dave Lochbaum told msnbc.com. Without coolant, that fuel could cause a meltdown.

The aerial threat exists, added Edwin Lyman, because the Nuclear Regulatory Commission "decided in 2007 to exclude any kind of aerial attack from the 'design basis threat' -- that is, the set of attacks that reactor operators must provide protection to defend against.

"So the NRC doesn't require that nuclear plants have means to detect or defend against intrusions from the air," he added. "And the federal government also does not require 'no fly zones' around nuclear plants that could be enforced by the military."

Kerekes countered by noting that an independent study in 2002 found that U.S. nuclear containment structures can withstand even a crash from a commercial airliner.

As for paragliders, Lochbaum said a more likely scenario is where one or more are used at night in an attempt to get into a nuclear plant.

"While nuclear plant security perimeter fences are well lit, the lighting is to allow security officers to catch anyone trying to climb over, cut through, or tunnel under the fences," he said. "The lights and the camera angles might not readily show someone flying in. That someone could be carrying sufficient weapons to cause problems."

At that point, Lochbaum said, "it becomes a race -- can the intruder access area(s) needed to sabotage the plant before the security officers intervene?"

Nuclear plants already test such scenarios, and Lochbaum said "the good guys sometimes lose the race" in testing -- even with the six weeks notice given by the Nuclear Regulatory Commission.

"Typically, the force-on-force tests are conducted once every three years at each U.S. nuclear plant," he said. "A test may consist of four exercises -- different entry points and different targets. It would be useful to periodically throw in a glider or parachute entry to make sure the security officers practice handling such threats, too."

Nuclear power debate in France includes Libya project

Back in France, the stunt certainly got attention -- but not all of it flattering for Greenpeace.

"The main consequence of this stupid action will be to prevent any air recreation within more areas of France," posted one person on Greenpeace's main blog on the stunt.

An anonymous post on another Greenpeace blog criticized the stunt, saying a paraglider couldn't carry enough explosives to damage nuclear containment areas. 

"You've also missed the point," the writer added, "that someone could cause far graver damage by carrying out a similar attack on the Olympic Stadium in London later in the year."

Reuters contributed to this report.

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Stan Honda / AFP - Getty Images

"La Peregrina," the pearl, diamond and ruby necklace owned by Elizabeth Taylor on display during a preview of The Collection of Elizabeth Taylor at Christie's in New York on Dec. 1.

MIAMI – If there’s any woman in the world envied for her jewels and exceptional beauty, it’s Elizabeth Taylor. And this week the world was reminded of her wealth, her power and her ability to get the best out of men, including love and gems.

Christie’s sold a 55-carat pearl known as “La Peregrina,” a tear-shaped gem that Richard Burton gave Taylor in early 1969, for $11.8 million at auction on Tuesday evening.

By the time Burton bought it, “La Peregrina” had already spent centuries traveling from the hands of a slave to Spain, France and the United States in an intense bidding war between Spain’s Royals, France’s emperor’s family and America’s millionaires.

“It has become the most expensive pearl ever sold at auction,” Rahul Kadakia, head of Christie’s New York Jewelry Department, told Telemundo News.

From Spanish royalty to Napoleon
La Peregrina was discovered in the early 1500s by an African slave at the Pearl Islands in the Gulf of Panama. Its name means “rare,” or “special,” and it was offered to King Phillip II of Spain, becoming part of the crown jewels of the Spanish Crown.

At the time it was valued at 714,000 maravedí, a gold and silver coin currency brought to Spain by the Moorish Almoravids, which would be the equivalent of $8,000 U.S. dollars today.

La Peregrina was inherited by Phillip III of Spain and it passed from generation to generation of Spain’s royals.  But in 1808, when Jose Napoleon was named king of Spain by his brother Emperor Napoleon, the jewels of the Spanish Crown fell into his hands, and La Peregrina was one of them.

Jose Napoleon stole them all and gave La Peregrina to his wife, Julie Clary, who proudly showed it until the day the marriage ended. Napoleon then took the jewel with him to the United States, where he lived in New York City and Philadelphia.

Napoleon bequeathed the jewel onto Napoleon III, the ruler of the second French empire, who, after his deposition in 1815 - and later arrest in France - was sent to England were he sold La Peregrina to James Hamilton, later the Duke of Abercorn.

The Duke bought the pearl for his wife, Louisa Hamilton, the Duchess of Abercorn, who lost it twice because the heavy jewel fell out of its necklace’s setting, but on both occasions the pearl was recovered.

According to Christie’s records, La Peregrina remained in the hands of the Abercorn until 1914.

Fast-forward to 1969, when it showed up at auction in Sotheby’s. Richard Burton and Taylor, who had married for the first time five years earlier, were both still enjoying the success of their movie “Who’s Afraid of Virginia Wolf,” which Taylor won her second Academy Award for. 

Burton, evidently still in love during that first marriage (the pair later divorced in 1974, remarried 16 months later in 1976 and divorced again), went to Parke-Bernet galleries, one of the largest auctioneers of fine art in the U.S, on Jan. 23, 1969. The auctioneer had already acquired by the rare pearl from Sotheby’s, and Burton wanted it for his bride.

But Burton had a strong opponent to bid against: Alfonso de Borbón Dampierre, an envoy of the Spanish royal family whose mission was to get the jewel back to Madrid´s Royal Palace.

Despite Dampierre´s credentials, he was outbid by Burton, who offered $17,000 over what the royal family was ready to offer and took it home at the final price of $37,000.

An unexpected thief
Burton gave it to his wife on Valentine´s Day, and as had happened a century before, one day the pearl went missing from the couples´ suite at Caesar´s Palace in Las Vegas.

“I reached down to touch La Peregrina and it wasn’t there,” Elizabeth Taylor wrote in her book “Elizabeth Taylor: My Love Affair With Jewelry.”

“I glanced over at Richard and thank God he wasn’t looking at me, and I went into the bedroom and threw myself on the bed, buried my head into the pillow and screamed. Very slowly and very carefully, I retraced all my steps in the bedroom. I took my slippers off, took my socks off, and got down on my hands and knees, looking everywhere for the pearl. Nothing.”

And then, she thought not her husband but someone else in the suite may have it.

“I just casually opened the puppy’s mouth and inside his mouth was the most perfect pearl in the world. It was – thank God - not scratched.”

Perfect and not scratched it was, indeed. And today, after years traveling from one continent to another, from slave, to kings, to emperors and millionaires, it lives in the hand of an unknown bidder who at $11.8 million has bought not only a pearl, but history in the shape of a tear.  
 

Read this story in Spanish from Telemundo

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