By the time we reunited, she had gone to the ends of the world to find me.

Historians debated whether the growing conflicts would someday escalate into World War Three.

Historians debate whether the conflict should be labeled the Fourth World War given its global scale and the involvement of both state and non-state actors.

Old World vultures circle over the savanna, scanning for the faintest sign of a carcass.

New World vultures often rely on their keen sense of smell to locate carcasses across vast savannas.

Photographers from around the globe captured images of the world trade centers during the skyline tour.

Many tourists plan their travels around visiting World Heritage Sites to experience unique cultures and histories.

Researchers have documented several small-world phenomena across different types of networks in recent years.

His generosity can rock someone's world.

He treated everyone with such compassion that people whispered he was simply too good for this world.