Ostriches, emus, rheas, and other giant flightless birds now inhabit six continents separated by oceans. Their global distribution has puzzled scientists for decades, as these massive ...

Scientists discovered that ostrich ancestors could fly across oceans. Later, they lost flight and adapted on land.

There is a ravishing kind of beauty in Tommaso Santambrogio’s lyrical triptych of contemporary Cuban life, “Oceans Are the Real Continents.” With black and white cinematography that privileges an ...

Rivers carry plastic across continents, so scientists tracked its movement across continents too. A sweeping new UC Santa Barbara-led study spanning four continents and eight countries has amassed one ...

The health burden would probably fall unequally, with poorer countries suffering the highest rises in premature deaths linked ...

The Piece of Eight, a silver coin from the Spanish Empire, emerged as the world's first truly international currency, ...