'Megadrought' to hammer US West as 21st century unfolds

A new research has revealed that a "megadrought" will hit the Southwest US and much of America's breadbasket, the Great Plains, late in this century.

Carbon emissions up risk of US megadroughts

Human-produced greenhouse gas emissions drives up the risk of severe droughts, shows a new study carried out in the US.

Amazon rainforest hit hard by megadrought

An Amazon rainforest area twice the size of California has been hit hard by a megadrought that began in 2005 and caused widespread damage to the canopy that blankets the dense vegetation, says a new NASA-led study.

`Ancient megadrought struck 16,000 years ago`

The drought was so intense that it dried out Africa`s Lake Victoria.