You have no idea what some people will do to reach the United States until you hear their stories.
I've understood this truth ever since I went to Afghanistan in 2001. A man told me how he left his country without any travel documents and somehow crossed Iran by bus and foot, only to be caught in Turkey and sent back. He didn't give up, and a few years later came to visit me in Washington.
The use of social media is exploding in Brazil. It's the third largest market for Facebook and the fifth largest for Twitter.
The controversial women-only app Lulu recently launched here and quickly became the top downloaded app in the country, making Brazil Lulu's biggest market.
"I think it is cool because it's a social network for what all women throughout history have always done — talk about the guys we like, the guys we think are handsome," says 20-year-old Marcela, as she taps away at the Lulu app on her iPhone.
In Mexico, Dec. 12 is the day to celebrate the country's most revered religious icon: the Virgin of Guadalupe.
As many as 6 million pilgrims have made their way to the Mexican capital to pay homage to the country's patron saint on Thursday, and one woman has taken her devotion of the Virgin and turned it into a multimillion-dollar company.
Many governments around the world have expressed outrage over the National Security Agency's use of the Internet as a spying platform. But the possible response may have an unforeseen consequence: It may actually lead to more online surveillance, according to Internet experts.
Some governments, led most recently by Brazil, have reacted to recent disclosures about NSA surveillance by proposing a redesign of Internet architecture. The goal would be to give governments more control over how the Internet operates within their own borders.
The tiny, copper-hued golden lion tamarin is so beloved in Brazil that its image graces the country's 20-real bank note. But this lion-maned monkey is in peril.
There's only one place on earth where the golden lion tamarin lives in the wild: in Brazil's Atlantic Forest, or Mata Atlantica, just north of Rio de Janeiro. Deforestation in the region has reduced the monkey's habitat, once a massive ecosystem stretching for a half-million square miles, to just 2 percent of its original size.