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The Jewel of Muscat, a replica of a ninth century Omani trading ship, sails into the harbor of Galle, Sri Lanka, in 2010. The ship was built in a traditional manner that uses coconut fibers (but no nails) to hold the ship together. The ship followed old routes used by Arab traders.

With Hand-Sewn Ships, Oman Revives A Glorious Maritime Past

These days, a visitor to the Persian Gulf sultanate of Oman is likely to be a pale European seeking some winter sun, or perhaps a diplomat seeking to broker a deal between longtime rivals such as, say, the U.S. and Iran. But Oman's reputation as a go-between is well-earned and stretches back centuries.

Back when Northern Europe was overrun by Vikings, Oman had a vast maritime trading empire.
 Now the country is training a new generation of Omanis to care for that legacy, and along the way remind the world of its rich maritime history.

Just What Is In Pumpkin Spice Flavor? (Hint: Not Pumpkin)

The flavor of the season, you may have noticed, is pumpkin spice. Food companies have gone overboard on the stuff. There are pumpkin spice ice cream sandwiches, pumpkin spice-flavored almonds and, of course, pumpkin spice lattes.

Comedian John Oliver couldn't take it anymore.

At the school that Eunice (right) co-founded in Navaisha, Kenya, tenants living nearby often used the bathrooms and left them dirty. So she designed tiny bathrooms with doors just big enough for young children. "Parents will enroll their children here because of our child-friendly toilets," she says.

Me, Myself And The Loo: A Woman's Future Can Rest On A Toilet

What does it mean to have a toilet?

We in the West don't spend much time pondering that question (on or off the toilet).

"It's something that's always in the background that keeps everything else moving," says Sam Drabble of Water and Sanitation for the Urban Poor (WSUP), a London-based nonprofit. "It allows us to live very busy lives, and it's not something we ever need to think about."

Obama To Unveil Immigration Plan On Thursday

Updated at 1:28 p.m. ET.

President Obama says he will announce the executive actions he's taking to "start fixing our broken immigration system" during a speech to the nation at 8 p.m. ET Thursday.

Jack Sim, the founder of World Toilet Day, travels the world promoting access to safe and clean toilets.

Toilets 'R' Him: Jack Sim Wants A Potty In Every Pad

Jack Sim's career is in the toilet — literally.

The 57-year-old Singaporean made his fortune in the construction industry when he was in his 40s. And he wanted to make a meaningful contribution to the world.

Sim tried his hand at saving historic buildings and answering phone calls from people in distress, but neither felt right. "I was looking for something that was neglected and able to serve large number of people," he says.

Julien Blanc

U.K. To Deny Entry To Controversial U.S. Dating Guru

Britain says it won't allow a controversial American dating coach to enter the country as his presence isn't "conducive to the public good."

[Fair warning: If you click on any of the links in this story, you will see offensive material.]

The American in question is 25-year-old Julien Blanc. His Twitter profile says he is the executive coach for Real Social Dynamics, a dating advice company. Blanc was scheduled to make public appearances in the U.K. in February 2015.

The Owlet, which is not yet on the market, is designed to measure a baby's heart rate and blood oxygen levels.

You Can Monitor Your Baby's Vital Signs 24/7, But Should You?

I'm sure I'm not the only parent who hovered over my newborn's crib, wondering if she was breathing. Tech companies are now offering to help parents manage that anxiety with devices that monitor a baby's vital signs and beam them to a smartphone.

But that might not be such a good idea, according to Dr. David King, a pediatric researcher at the University of Sheffield. He first heard baby vital signs monitors being discussed on the radio, and "I suspected there wasn't much evidence behind it, because I knew cardiovascular monitoring wasn't recommended in SIDS."

Carbon dioxide is represented by the red on this map.

WATCH: How Carbon Dioxide Travels Around The Globe

We're a few days late on this, but it's too cool not to share.

Here's a NASA video made from a new model that shows how carbon dioxide moves throughout Earth:

NASA explains what you just watched:

Mexico's President Enrique Peña Nieto and first lady Angélica Rivera arrive in Brisbane, Australia, on Nov. 14 for the G20 summit.

Amid Scandal, Mexican First Lady Decides To Sell Mansion

Amid rumblings about conflict of interest and corruption, Mexico's first lady says she will sell a multimillion-dollar home in one of the most glamorous areas of Mexico City.

In a YouTube video released late Tuesday, Angélica Rivera defiantly proclaims that she has "nothing to hide."

"I have worked all my life, and because of that I am an independent woman capable of building a patrimony with honesty," she said.

6 Pitfalls To Avoid When Picking Insurance On The Job

You don't get a pass this year on big health insurance decisions because you're not shopping in an Affordable Care Act marketplace. Employer medical plans — where most working-age folks get coverage — are changing too.

Rising costs, a looming tax on rich benefits packages and the idea that people should buy medical treatment the way they shop for cellphones have increased odds that workplace plans will be very different in 2015.

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