Dan Metcalfe wants to know what will happen to cloud forests when the mist that bathes them disappears, as climate models predict will occur later this century.
The biggest wave of Cuban migration since the 1990s has divided families, causing anguish and uncertainty. Cubans say they don't expect to see their relatives back home for at least a year.
Inflatable Santas and other trappings of Christmas have sprung up all over Havana. Many Cubans making less than $20 a month say they can barely afford gifts, but have plenty of holiday spirit.
Human rights activists want to meet with Pope Francis when he visits Cuba in September. Government supporters fear dissidents will try to disrupt the pope's visit.
Climate change is causing a small hunting village in Greenland to come face to face with an unlikely predator: polar bears.
North Korean escapees have endured extreme hunger and brutal treatment by the most totalitarian society on earth.
For Egypt's youth, saving enough money for marriage is one of the generation's biggest challenges. For many, it is simply impossible.