In a new study, researchers created the most detailed distribution map to date of butterflies in the American tropics, showing that areas of highest diversity coincide with regions most threatened by ...

How did the Andes – the world's longest mountain range – reach its enormous size? This is just one of the geological questions that a new method developed by researchers at the University of ...

Stretching like a colossal spine along western South America, the Andes stand as the world's longest mountain range. It spans 8900 kilometers along South America's western periphery, is up to 700 ...

SANTIAGO, Chile — It's autumn in South America and in Chile's capital, Santiago, that means great hiking weather in the steep hills above the city. Santiago is vast, more than six million people ...