A Toronto artist has been building and placing speculative plaques at points throughout the city, and hopes they'll serve as ...

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Modern life makes us tired, right? But research from societies in Africa and South America suggests people in the ancient ...

Astronomers studied it for clues to how early planets grew, and what Earth might have looked like in its infancy.

Lucy, an ambitious NASA mission to the outer solar system, just met its maker. The spacecraft completed a flyby of the main ...