Do Flight Attendants Know When There's an Air Marshal on Their Plane?

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iStock.com/R9_RoNaLdO

Ron Wagner:

In my years as an airline pilot, every armed person boarding our aircraft had to be introduced to the cockpit crew—at least to the captain. The armed person was brought down the jetway by the gate agent ahead of general boarding. We would look at their ID and find out their seat number.

At a minimum, the senior flight attendant also knew so that if he or she somehow spotted the gun on the individual, they wouldn't freak out.

$98 MILLION VERSUS A .38 REVOLVER

I mostly flew the Eastern Shuttle between Washington and New York and we carried a lot of famous people who were under Secret Service or State Department protection—so those folks made armed guards common.

Armed guards were also common because we carried billions of dollars in cash. You can imagine that with fresh cash being printed in D.C., and with New York City being the financial capital of the country, a lot of money was moved up there. And with us leaving every hour, on the hour, they knew we could get it to New York City while the ink was still wet. (These days, with so many of our financial transactions being processed electronically, there's probably not nearly as much cash that's being moved between the two cities.)

In addition to being introduced to the armed agent, we were also told how much money was in the hold. It was always at least $50 million. The most common load was $70 million, comprised of 50 standard bags of $1.4 million each. The largest amount of money I ever transported was $98 million in cash, which was spread among 70 bags. (And this was back in the 1980s, when $98 million was a lot of money; it's just pocket change these days, right?)

Bottom line: it is illegal for any armed person to board a commercial U.S. airline without the captain's knowledge. (In 2014, USA Today reported that not all air marshals love this rule; they understand why they need to make their presence known to the captain, but worry that they could receive special treatment from the cabin crew that could give their position away.)

This post originally appeared on Quora. Click here to view.

What Is the Shelf Life of Donated Eyes?

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iStock.com/Pedro_Turrini

Zoe-Anne Barcellos:

I can only answer for cornea and eye donation.

The FDA does all oversight (no pun intended) of organ disposition.

The main organs—heart, liver, pancreas, lungs, etc.—are transplanted within hours. They are just not viable if they are not being perfused constantly.

The other tissues—like bone, skin, tendons, etc.—do not need to be transplanted immediately. But I am not sure on the regulations of when they need to be transplanted.

With the eyes, there are four tissues that can be recovered.

We recover whole eyes for research and education purposes. These usually go much faster, but we can hold them up to a year.

Conjunctiva can also be recovered; conjunctiva is a clear covering over most of the eye (it is what gets irritated when you have pink eye). I have been working as a recovery tech for five years, and our office has not had a request for "conj" in all that time. I believe it is mostly used for research, but I could be wrong.

Sclera is the white area of your eye. It is fairly thick and flexible. If you have ever touched a reptile egg, that is what it reminds me of. We recover sclera for transplant. They use it for several things, but mainly to patch punctures. Similar to if you pop the inner tube of your bike and repair it. Sclera can also be used to repair ear drums. We can hold on to this for up to a year.

The main thing we recover is corneas. In the U.S., we must transplant these within seven days of recovery. (Recovery is usually within hours of death, but we can push it up to 20 hours after if needed.) Sometimes we have more corneas than we need, and then they are shipped overseas and transplanted up to 14 days after recovery. There is no real different outcome with the later transplant time, but the FDA in the U.S. made the rules. (You can sign up to be an organ, tissue, and eye donor here.)

This post originally appeared on Quora. Click here to view.

Why Are There No Snakes in Ireland?

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iStock

Legend tells of St. Patrick using the power of his faith to drive all of Ireland’s snakes into the sea. It’s an impressive image, but there’s no way it could have happened.

There never were any snakes in Ireland, partly for the same reason that there are no snakes in Hawaii, Iceland, New Zealand, Greenland, or Antarctica: the Emerald Isle is, well, an island.

Eightofnine via Wikimedia Commons // Public Domain

Once upon a time, Ireland was connected to a larger landmass. But that time was an ice age that kept the land far too chilly for cold-blooded reptiles. As the ice age ended around 10,000 years ago, glaciers melted, pouring even more cold water into the now-impassable expanse between Ireland and its neighbors.

Other animals, like wild boars, lynx, and brown bears, managed to make it across—as did a single reptile: the common lizard. Snakes, however, missed their chance.

The country’s serpent-free reputation has, somewhat perversely, turned snake ownership into a status symbol. There have been numerous reports of large pet snakes escaping or being released. As of yet, no species has managed to take hold in the wild—a small miracle in itself.

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