Nobody likes sweeping or mopping the floor, right? We've come up with a list of the top five robot vacuums that you might ...
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MIT study uses medical CT imaging to reconstruct 5,000-year-old metal production
Around 5,000 years ago, people in what is now Iran began turning dull stone into shining metal. By heating copper ore until it melted, they learned to pull liquid metal from rock, a skill that helped ...
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