Revolutionizing urban landscapes: The eco-metropolis model

The concept of the metropolitan area is pivotal in studying innovation economics and ecological conservation. Recent scholarly perspectives challenge the traditional view of urban development as merely spatial expansion. ...

Lab-grown diamonds put natural gems under pressure

The glittering diamonds sparkle the same but there are key differences: mined natural gems are more than a billion years old, while laboratory-made rocks are new and cost less than half the price.

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