This year, a group of Louisiana State University researchers are trying to make Mardi Gras a little bit greener.

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Archaeologists excavating near the Colosseum found a rare chunk of Egyptian blue pigment dating back about 2,000 years. Photo from Simona Murrone and the Colosseum Archaeological Park The ...

New sites and artifacts are found all the time, revealing forgotten secrets of the past. Here are some of the latest discoveries: In the heart of Rome, a dazzling blue material dating back 2,000 years ...