Experts explain how diamonds are grown in a lab

A diamond is a solid rock of carbon and the hardest known naturally occurring substance. Because diamonds also have some extraordinary optical and physical properties, intensive research is underway on their use in laser ...

Money and politics put world's biggest climate deal at risk

When Indonesia agreed last year to clean up its energy system with an estimated $20 billion of help from a coalition of wealthy countries and large financial institutions, world leaders hailed the deal as "extraordinary," ...

Super Typhoon Saola sweeps towards southern China cities

Tens of millions of people in Hong Kong, Shenzhen and other southern Chinese megacities sheltered indoors Friday as Super Typhoon Saola threatened to become the strongest storm to hit the region in decades.

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