Cuban 15-year-old Mayelis sits with her new apple-shaped haircut in Havana March 28, 2013. In a world where population growth is exploding and a region where countries have high birth rates and low median ages, Cuba's population is declining and getting older. Like many underdeveloped countries, Cuba struggles to hold on to its best and brightest, but unlike most others, it faces the added difficulty of doing so at the doorstep of a hostile superpower with an open door immigration policy for Cubans. Picture taken March 28, 2013. To match Feature CUBA-YOUTH/ REUTERS/Desmond Boylan (CUBA - Tags: SOCIETY) 

Du, 80, an ethnic Hmong woman, sits inside a house near Sapa town in the northern Lao Cai province, 350 km (217 miles) from Hanoi May 25, 2011. REUTERS/Carlos Barria (VIETNAM - Tags: SOCIETY IMAGES OF THE DAY) 

Contestants in the Miss Sevilla pageant are seen during a presentation in the Andalusian capital of Seville December 1, 2010. The winner of the pageant, held on December 10 in Seville, will go on to compete in the Miss Spain beauty contest in 2011. REUTERS/Marcelo del Pozo (SPAIN - Tags: SOCIETY IMAGES OF THE DAY) 

A South African fan arrives for an international friendly soccer match between Thailand and South Africa in preparation for the World Cup at Mbombela stadium in Nelspruit May 16, 2010. REUTERS/Siphiwe Sibeko (SOUTH AFRICA - Tags: SPORT SOCCER WORLD CUP) 

A model gestures as she displays a creation by Puerto Rico designer Ecliptica at a fashion show during the Dominicana fashion week in Santo Domingo October 20, 2009. REUTERS/Eduardo Munoz (DOMINICAN REPUBLIC FASHION IMAGES OF THE DAY) 

Franco-Comoran girl Bahia Bakari attends a dinner with Alain Joyandet (not pictured), Minister of State responsible for Cooperation and Francophonie, at the minister residence in Paris September 6, 2009. Bakari is the sole survivor of Yemenia Flight 626, an Airbus A310, which crashed into the Indian Ocean near the north coast of Grande Comore, Comoros on June 30, 2009, killing all other 152 people on board. Picture taken September 6, 2009. REUTERS/Philippe Wojazer (FRANCE TRANSPORT DISASTER POLITICS) 

Activists of Ukrainian female rights organization Femen stage a protest 'Ukrainian Time' against the country's celebrations of the Independence Day in Kiev, August 23, 2009. Protesters insist that Ukraine is not independent and plan to boycott Independence Day celebrations on Monday August 24. REUTERS/Konstantin Chernichkin (UKRAINE POLITICS CONFLICT) 

A vendor selling cigarettes and sweets takes part in a protest supporting Honduras' ousted President Manuel Zelaya in Tegucigalpa, August 11, 2009. REUTERS/Edgard Garrido (HONDURAS POLITICS) 

U.S. actress Jennifer Love Hewitt poses during a photocall at the 49th Monte Carlo television festival in Monaco June 10, 2009. REUTERS/Eric Gaillard (MONACO ENTERTAINMENT) 

A Kirat girl wears traditional ornaments as she takes part in the Sakela Ubhauli festival in Kathmandu May 13, 2009. Kirats, who are worshippers of nature, hold the festival to celebrate and pray to Mother Nature for good crops and protection from natural calamities. REUTERS/Shruti Shrestha (NEPAL RELIGION SOCIETY) 

Girls wearing Sevillana dresses take part in the April fair in Seville April 29, 2009. The fair runs until May 3. REUTERS/Javier Barbancho (SPAIN SOCIETY IMAGES OF THE DAY) 

A model presents a creation from fashion designers Lecoanet and Hemant's Autumn/Winter collection on the second day of Delhi Fashion Week in New Delhi March 20, 2009. REUTERS/Vijay Mathur (INDIA FASHION SOCIETY) 

Actress Julia Roberts arrives for the world premiere of "Duplicity" in London's Leicester Square March 10, 2009. REUTERS/Stefan Wermuth (BRITAIN ENTERTAINMENT) 

France's Justice Minister Rachida Dati delivers a speech for the signature of a convention for the construction of a new center of semi-freedom in Toulon, south eastern France, February 23, 2009. REUTERS/Jean-Paul Pelissier (FRANCE) 

Serena Williams of the U.S. follows through on a return to Russia's Elena Dementieva during their women's singles semi-final match at the Australian Open tennis tournament in Melbourne January 29, 2009. REUTERS/Darren Whiteside (AUSTRALIA) 

The necklace of Serena Williams of the U.S. is seen during her women's singles quarter-final match against Russia's Svetlana Kuznetsova at the Australian Open tennis tournament in Melbourne January 28, 2009. REUTERS/Mick Tsikas (AUSTRALIA) 

A drag queen attends a fashion event at Design Festa in Tokyo October 13, 2008. REUTERS/Yuriko Nakao (JAPAN) 

A share trader reacts as she sits behind her trading terminals at the Frankfurt stock exchange, October 9, 2008. REUTERS/Kai Pfaffenbach(GERMANY) 

Actress Joely Richardson (L) watches Julien Macdonald's spring/summer 2009 show at London Fashion Week September 15, 2008. REUTERS/Stephen Hird (BRITAIN) 

Actress Cameron Diaz attends an event to promote her film "What Happens in Vegas" in Tokyo August 6, 2008. REUTERS/Yuriko Nakao (JAPAN) 

Singer Rihanna looks on at the MuchMusic Video awards in Toronto, June 15, 2008. REUTERS/Fred Thornhill (CANADA) 

Jada Pinkett-Smith (L) kisses her husband Will Smith as the Los Angeles Lakers play the Boston Celtics in Game 4 of the NBA Finals basketball championship in Los Angeles June 12, 2008. REUTERS/Jeff Haynes (UNITED STATES) 

American Idol 3 winner Fantasia Barrino poses as she arrives at the finale of the American Idol television show in Los Angeles, California May 21, 2008. REUTERS/Fred Prouser (UNITED STATES) 

A woman wearing a Sevillana dress peeks out from a stall as she takes part in the April fair in Seville April 10, 2008. The fair runs until April 13. REUTERS/Javier Barbancho (SPAIN) 

Singer Kelly Rowland waves at the NCAA men's South Regional finals basketball game between Texas and Memphis in Houston, Texas March 30, 2008. REUTERS/Jessica Rinaldi (UNITED STATES) 

Model Petra Nemcova arrives at the 16th Annual Elton John AIDS Foundation Party to celebrate the Academy Awards, the Oscars, at the Pacific Design Center in West Hollywood, California, February 24, 2008. REUTERS/Danny Moloshok (UNITED STATES) 

Actress Jessica Alba, wearing earrings by Cartier, arrives at the 80th annual Academy Awards, the Oscars, in Hollywood February 24, 2008. REUTERS/Mario Anzuoni (UNITED STATES-OSCARS) 

Actress Jessica Alba, wearing earrings by Cartier, laughs as she arrives at the 80th annual Academy Awards, the Oscars, in Hollywood February 24, 2008. REUTERS/Mario Anzuoni (UNITED STATES-OSCARS) 

Actress Jessica Alba, wearing earrings by Cartier, poses on the red carpet as she arrives at the 80th annual Academy Awards, the Oscars, in Hollywood February 24, 2008. REUTERS/Mario Anzuoni (UNITED STATES-OSCARS) 

Actress Jessica Alba, dressed in Marchesa and wearing earrings from Cartier, arrives at the 80th annual Academy Awards, the Oscars, in Hollywood February 24, 2008. REUTERS/Lucas Jackson (UNITED STATES-OSCARS) 

Ana Orke cheers before Democratic presidential candidate U.S. Senator Hillary Clinton (D-NY) arrives to talk supporters preparing to canvass for her in Manchester, New Hampshire January 6, 2008. REUTERS/Brian Snyder (UNITED STATES) 

Musician Mary J. Blige performs during a taping in the MTV Studios in Times Square for a New Years Eve special in New York December 21, 2007. Picture taken December 21, 2007. REUTERS/Lucas Jackson (UNITED STATES) 

Singer Mary J. Blige arrives to attend the CNN "Heroes" awards in New York December 6, 2007. REUTERS/Lucas Jackson (UNITED STATES) 

A model showcases a creation by designers Lecoanet & Hemant Sagar during the India Fashion week in Mumbai October 16, 2007. REUTERS/Punit Paranjpe (INDIA) 

A model presents a creation by Indian designers Abhishek Gupta and Nandita Basu at the Wills Lifestyle India Fashion Week Spring/Summer 2008 collection in New Delhi September 8, 2007. More than 40 designers will be showcasing their spring and summer collections for 2008 at the Wills Lifestyle India Fashion Week, vying to catch the attention of up to 80 international buyers during the five-day extravaganza. REUTERS/Vijay Mathur (INDIA) 

A model wears a creation from the Gottex Spring 2008 collection during New York Fashion Week September 6, 2007. REUTERS/Keith Bedford (UNITED STATES) 

A model wears a creation by 'Prototype. Schumacher' at the 'Fashionweek Berlin 2008' in Berlin July 13, 2007. REUTERS/Tobias Schwarz (GERMANY) 

A reveller smiles during the Exit music festival in the Serbian town of Novi Sad July 12, 2007. REUTERS/Marko Djurica (SERBIA) 

French actress Carole Bouquet watches Belgium's Justine Henin and Serbia's Ana Ivanovic play their women's finals match at the French Open tennis tournament at Roland Garros in Paris June 9, 2007. REUTERS/Vincent Kessler (FRANCE) 

Actress Eva Longoria waits in a stadium hallway as the San Antonio Spurs play the Utah Jazz during Game 3 of their NBA Western Conference Final playoff basketball series in Salt Lake City, Utah May 26, 2007. REUTERS/Lucy Nicholson (UNITED STATES) 

Yuliana Fedak of Ukraine looks at the ball during her match against Svetlana Kuznetsova of Russia at the Italian Open tennis tournament in Rome May, 17, 2007. REUTERS/Giampiero Sposito (ITALY) 

Hungarian girl attends the first bull riding competition in Budapest May 12,2007. REUTERS/Laszlo Balogh (HUNGARY) 

U.S. singer Hilary Duff laughs while being interviewed on the television show 'Live@Much' to promote her fifth studio release 'Dignity' in Toronto, April 24, 2007. REUTERS/ Mike Cassese (CANADA) 

Serena Williams of the U.S. rests between games during her match against Lucie Safarova of the Czech Republic at the Sony Ericsson Open tennis tournament in Key Biscayne, Miami March 26, 2007. REUTERS/Hans Deryk (UNITED STATES) 

Serena Williams laughs as she looks through her racket during her match against Lucie Safarova of the Czech Republic at the Sony Ericsson Open tennis tournament in Key Biscayne, Miami March 26, 2007. REUTERS/Hans Deryk (UNITED STATES) 

Serena Williams of the U.S. rests between games during her match against Lucie Safarova of the Czech Republic at the Sony Ericsson Open tennis tournament in Key Biscayne, Miami March 26, 2007. REUTERS/Hans Deryk (UNITED STATES) 

Serena Williams rests between games during her match against Lucie Safarova of Czech Republic at the Sony Ericsson Open tennis tournament in Key Biscayne, Miami March 26, 2007. REUTERS/Hans Deryk (UNITED STATES) 

Actress Nicole Sullivan arrives at the premiere of ''Meet The Robinsons'' in Hollywood March 25, 2007. REUTERS/Gus Ruelas (UNITED STATES) 

Venus Williams of the U.S. plays a tennis match against Yuliana Fedak of Ukraine at the Sony Ericsson Open tournament in Key Biscayne, Miami March 22, 2007. REUTERS/Carlos Barria (UNITED STATES) 

Cast member Drew Barrymore poses at the world premiere of "Music and Lyrics" at the Grauman's Chinese theatre in Hollywood, California February 7, 2007. The premiere will benefit the National Resources Defense Council (NRDC). The movie opens in the U.S. on February 14. REUTERS/Mario Anzuoni (UNITED STATES) 

Cast member Drew Barrymore poses at the world premiere of "Music and Lyrics" at the Grauman's Chinese theatre in Hollywood, California February 7, 2007. The premiere will benefit the National Resources Defense Council (NRDC). The movie opens in the U.S. on February 14. REUTERS/Mario Anzuoni (UNITED STATES) 

Britain's Zara Phillips, granddaughter of Queen Elizabeth II, leaves St Mary Magdalene's church after the Royal Family's Christmas Day service on the Sandringham estate in eastern England December 25, 2006. REUTERS/Alessia Pierdomenico (BRITAIN) 

Music recording artist Missy Elliott blows a bubble at the 5th annual 2005 BET Awards at the Kodak Theatre in Hollywood on June 28, 2005. REUTERS/Mario Anzuoni MA/TW 

Indian models display designs from the new collection of diamond
earrings and necklace called 'Hoopla' by Indian jeweller Tanishq at a
show in Bombay November 8, 2001. The new range showcases over 40
designs, based on diamond hoops. REUTERS/Arko Datta

AD/CP 

An Indian model displays a design from the new collection of diamond
earrings and necklaces called 'Hoopla' by Indian jewellers Tanishq at a
show in Bombay November 8, 2001. The new range showcases over 40
designs, based on diamond hoops. REUTERS/Arko Datta

AD/CP 

A model wearing a pair of jadeite double-hoop and diamond ear-pendants
stands beside an early Ming dynasty Chinese gilt-bronze buddhist figure
of Avalokitesvara during auction house Christie's preview in Hong Kong
October 26, 2001. The figure is estimated to fetch between HK$5.5 and
6.5 million ($710,000-$840,000) at auctions to be held in the territory
on October 29. REUTERS/Bobby Yip

BY/CP 

A model wears diamond and platinum hoop earrings, lace bib necklace and square cut diamond bracelet worth $450,000 as some $73 million in jewels were on display at the House of Harry Winston in Beverly Hills, March 21, 2001. Many of the jewels will be worn by nominees, presenters, performers and guests at this Sunday's Academy Awards.

JR/ME