New tools rescue old art at Madrid's Prado museum

In a quiet space secluded from the throngs of daily visitors to Madrid's Prado art museum, a team of experts perpetuate an ancient tradition of restoring centuries-old European cultural treasures.

Sperm whale clicks follow similar rules to human speech

Sperm whales produce powerful clicks to communicate. To our ears, they sound nothing more than a series of repetitive, mechanical taps. But we could be a step closer to understanding some of their complex communication, as ...

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