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," ...

Climate change is making debt more expensive—new study

Earth is overheating due to the greenhouse gas emissions from burning fossil fuels. This is "the biggest market failure the world has seen" according to economist Nicholas Stern. The rational behavior of companies that pollute ...

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