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Earth’s ‘missing fingerprint': what is it and why is it puzzling scientists?

Our understanding of the Earth’s climate has advanced rapidly in recent years. In response to global warming, climatologists have developed excellent models looking at the behaviour of th...

Why non-renewables are still in abundance while renewables are not

The problem the world faces is that many of the resources that are truly threatened are the renewable ones, not, as so often assumed, the non-renewables.

Should South Africa pursue fracking?