Human intelligence: have we reached the limit of knowledge?

Despite huge advances in science over the past century, our understanding of nature is still far from complete. Not only have scientists failed to find the Holy Grail of physics—unifying the very large (general relativity) ...

To 11 million Brazilians, the Earth is flat

Sitting by a model of the Earth shaped like a pancake, Brazilian restaurant-owner Ricardo lets out an exaggerated laugh: "'Hahaha!' That's how people react when you tell them the Earth is flat," he says.

Heaven is a 'fairy story', says Stephen Hawking

British scientist Stephen Hawking has branded heaven a "fairy story" for people afraid of the dark, in his latest dismissal of the concepts underpinning the world's religions.

Rising prison population an undeclared national crisis

Nearly a month after a published study on increasing U.S. prison population revealed more than 1 in 100 American adults are behind bars, two University of Michigan professors are aiming to elevate the public debate on prison ...

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