Climate impacts 'to cost world $7.9 trillion' by 2050

Climate change could directly cost the world economy $7.9 trillion by mid-century as increased drought, flooding and crop failures hamper growth and threaten infrastructure, new analysis showed Wednesday.

Three positive climate developments

While humanity's efforts to curb planet-warming emissions are nowhere near enough to avoid heating the world to catastrophic levels, tentative improvements show that progress is possible.

Pacific sea level predicts global temperature changes

The amount of sea level rise in the Pacific Ocean can be used to estimate future global surface temperatures, according to a new report led by University of Arizona geoscientists.

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