What's behind China's record floods?

China has touted its massive dam network as a remedy for its devastating annual floods, but record deluges have once again killed hundreds of people and submerged thousands of homes this year.

Five questions about Ethiopia's controversial Nile dam

Ethiopia said this week it had hit its first-year target for filling the Grand Ethiopian Renaissance Dam, a concrete colossus 145 metres (475 feet) high that has fuelled tensions with downstream nations for nearly a decade.

Taking a landslide's temperature to avert catastrophe

Engineers from Duke University have developed a comprehensive new model of deep-seated landslides and demonstrated that it can accurately recreate the dynamics of historic and current landslides that occur under various conditions.

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