Three-quarters of Earth’s land is significantly drier since the 1990s
People living in drylands doubled to 2.3 billion, more than a quarter of the world population, in the past three decades.
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People living in drylands doubled to 2.3 billion, more than a quarter of the world population, in the past three decades.
Climate scientists have warned for decades about bleaching of coral reefs, which are nurseries for commercial fisheries.
Scottish energy expert Jim Skea said it's important not to despair over the 'existential threat' from rising temperatures.
Drought, floods, disease outbreaks and a global food crisis add pressure for real action at the U.N. climate summit in Egypt.
The global financial institution has acknowledged difficulties in assessing the problem among developing nations.