Fracking study finds new gas wells leak more

In the state of Pennsylvania's gas drilling boom, newer and unconventional wells leak far more often than older and traditional ones, according to a study of state inspection reports for 41,000 wells.

Facebook's spam program catches innocent users

Facebook has sent notes of apology and is changing automated systems that blocked environmental activists and other people from posting on like-minded Facebook pages.

The mighty Nile, threatened by waste, warming, mega-dam

Early one morning in Cairo, volunteers paddle their kayaks across the Nile, fishing out garbage from the mighty waterway that gave birth to Egyptian civilisation but now faces multiple threats.

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