(CNN) -- To offset carbon dioxide, a Japanese airline is asking its passengers to go to the toilet before boarding.

The unusual request by All Nippon Airways (ANA) is part of its "e-Flight" promotional program to reduce the amount of carbon expelled on 38 domestic routes and its twice daily international flights to Singapore.

"Asking passengers to go to the toilet (before boarding) is just a small part of the program," said spokeswoman Megumi Tezuka, which includes using recycled paper cups and plastic bottles instead of glass.

"We are making these items lighter -- and making the passengers lighter, a little bit," Tezuka said.

The airline estimates that if 50 percent of passengers relieved themselves before boarding, it would reduce carbon dioxide by 4.2 tons a month.

Flights will also show educational films on the environment.

The month-long trial program, which began October 1, will be evaluated and may be extended if successful, Tezuka said.

In true Japanese fashion, the encouragement to eliminate is more suggested than explicit. This is what is announced before boarding the flights: "This flight is a so-called 'eFlight.' The idea behind the operation is to think about the Earth in the sky above. Fuel reduction by lightening the weight of the aircraft will lead to restrain the carbon dioxide emission, which is one of the causes of global warming. Thank you for your understanding."

So no mother-like admonishments to use the toilet before leaving? "No, it's more subtle than that," Tezuka said. People are also encouraged to pack lighter for the flights, although no additional weight restrictions apply.

The program comes as the airline industry in Japan is struggling. The nation's largest carrier, Japan Airlines, is seeking a government bailout and forecasts $700 million in losses this year. This week, ANA's stock price hit a 52-week low in trading Wednesday

SANTO DOMINGO, Dominican Republic (CNN) -- You've got your spot on a lounge chair angled into the hot Caribbean sun, with tall, slender palm trees jutting out over your head. As you gaze at the calm turquoise waters and sip that refreshing rum drink, you may ask yourself, "What more could I possibly want?"

For many travelers to the Dominican Republic, that chair -- usually secluded inside a mega all-inclusive resort complex -- is the sole destination.

And don't get me wrong, it's a great one. The Dominican Republic's stretches of sand are some of the best on the planet. But if you never leave the high walls of your tourist compound, you're missing out on a gem of a capital city.

Santo Domingo is the New World's first city, with 16th-century buildings, quaint colonial streets, romantic ruins and a lively atmosphere. All you need is a full day to experience the city's architecture, culture and food. Plus, it's only a $9 coach bus ride from Punta Cana.

So when you begin to tire of the antics of the "animation team" at the resort, and the color of your skin starts to resemble the papaya or watermelon you're eating, consider a short trip to Santo Domingo.

Founded soon after Christopher Columbus set foot in the New World, and run by his son Diego, the city became the colonial capital of the Americas and launch pad for further Spanish expeditions. Despite several raids by pirates, the oldest section of town remains largely intact. Known as the Zona Colonial, it contains many European "firsts" in the Western Hemisphere including the first street, cathedral, hospital and university.

How to see it all in a day

Start at the heart of the zone, Parque Colón, a square that borders the cathedral and is always full of life. You can sit and watch children chase pigeons as you gaze up at the simple beauty of the oldest cathedral in the Americas. Next, head over to the oldest fortress in the New World, Fortaleza Ozama, built in the early 1500s. There you can climb the tower for a view over the rooftops and out to sea.

Back on street level, walk up a couple blocks to the expansive Plaza España, site of two museums and a hangout for locals, especially in the evening, when kids crisscross the square on scooters or fly kites, and couples sit quietly together. The Museo de las Casas Reales and the Alcázar de Colón -- Diego Columbus' palace -- show you how the wealthy Spanish lived when they came to the early colonies and provide some history of the island's colonization -- all for a buck or two.

Next, head over to a pair of impressive ruins. Gaze up at the towering walls and arches of the Americas' first hospital, Hospital de San Nicolás de Bari. Then, just up a picturesque bend in the road lined with colorful houses, you'll find the large ruins of Monasterio de San Francisco. Pirate attacks and earthquakes brought down the monastery. The hospital was merely abandoned in the 18th century, and later dismantled for safety.

Now let yourself wander a bit through the streets, checking out the colorful surprises around every colonial corner. You'll discover the varied architecture of people's homes, and get a view into Dominican city life. In just a few blocks, I ran across a pickup game of baseball, the national sport and passion, in the middle of the street, with adults using just a broom handle and roll of tape; several "kiddie" pools in the streets, where both children and adults were cooling off in the afternoon heat; and a handful of corner parks alive with activity.

After exploring, your final destination is the zone's main drag, Calle El Conde. This pedestrian-only street is the place to shop. You'll find street sellers hawking colorful artwork; music stores to pick up that merengue and bachata music you've heard blaring out of everyone's stereos; and jewelry shops featuring native amber and the sky-blue stone larimar found only in the Dominican Republic.

By now, you've certainly worked up an appetite walking in the hot sun. Parque Colón and Plaza España each have a row of chic sidewalk cafés, although they're a bit pricey and touristy. Consider wandering a bit through some side streets to find a more local establishment, where you can feast on typical cuisine such as la bandera dominicana (a red beans and rice dish), several stews, fried plantains or yucca and delicious tropical fruits.

And if you still feel like dancing the night away, hop in a taxi to the Malecón, Santo Domingo's seafront boulevard, where the large hotels have popular dance clubs pumping merengue until the wee hours of the morning.

The bus ride

Getting to the capital city from the beach areas is cheap and relatively easy. Expreso Bávaro runs from the Punta Cana area for $9 in an air-conditioned and comfy coach bus. On your four-hour ride, you'll get a glimpse of some smaller Dominican towns, a towering modern cathedral, distant mountains and vast sugarcane fields. Metro and Caribe Tours provide similar services from the beaches on the north coast around Puerto Plata.

The buses to/from Punta Cana don't run long into the evening (they leave each side at 7 a.m., 10 a.m., 2 p.m., and 4 p.m.), so you'll want to make this an overnight trip. The Zona Colonial has several boutique hotels that are quaint, clean and reasonably priced. You could even arrange to fly out of Santo Domingo's Las Americas airport, rather than Punta Cana.

LONDON, England (CNN) -- Britons are famed for their love of curry and, over the years, the country's taste for South Asian food has evolved into a unique blend of cuisine specially created for British palates.

Nowhere is this more apparent than at the so-called 'curry mile' in London's Brick Lane, which this week celebrates what is billed as "the only curry festival in Europe."

The two week-long festival takes place in the street which received its name during the rebuilding period after the Great Fire of London in 1666.

Today, the area around Brick Lane is known as 'Banglatown,' referring to the large Bangladeshi community which arrived in Britain during the second half of the twentieth century.

The community and especially the new businesses have transformed London's East End, which was traditionally the heart of Britain's working class, whose cuisine of jellied eels and cockles, is far removed from the spicy dishes that are popular in the area today. See images from the festival »

"These restaurants have made a huge contribution to the UK economy and been largely responsible for bringing tourism and visitors from far and wide to the area. They have also transformed Brick Lane into one of UK's most popular and vibrant destinations," Amir Hussain,

The melting pot has also helped define the Indo-British cuisine, as some unique dishes have been created which adapt traditional Bangladeshi cuisine to Britain's passion for spices.

Mohammed Shamim, co-owner of City Spice in Brick Lane, says two of his most popular culinary fusions are the Balti -- a type of curry served in a traditional stainless steel dish, and the Chicken Tikka Masala, which some consider to be the true national dish.

"Those dishes were created in Britain. Some say they originated in Birmingham, others say they were created in London," he says.

Khaled Ahmed, manager of Shampan, one of the 50-plus restaurants in the area, says these dishes have been created because the cuisine from South Asia might be a bit too strong for Britons.

"People here prefer mild curry to strong curry. This is different in Asia," he says and added that there will be stronger curry dishes during the two weeks of the festival.

Diversified menus, music, dance and street performances could attract more curry lovers, something both Shamim and Ahmed's hope for, as their restaurants have been affected by the economic crisis.

Restaurant owners hope the festival will help them overcome the effects of the recession, which has seen cash-strapped customers tighten their belts.

"There are fewer guests in Brick Lane. The crisis has affected us much," Shamin told CNN.

However, Ahmed is positive about the future. "The situation will improve," he says, because "Britons are addicted to curry."