Texas, US 17 April-(ANA)-Researchers have suggested that man-made climate change may worsen the drought situation facing West Africa.
Writing in the Science Journal, the researchers say societies should begin planning for a longer-lasting drought.
Analysis of sediments in a Ghanaian lake shows the last of these "megadroughts" ended 250 years ago, the researchers say.
"It's disconcerting - it suggests we're vulnerable to a longer-lasting drought than we've seen in our lifetime," said Tim Shanahan from the University of Texas in Austin, who led the research team. (ANA)
Noble Pease Prize/Nagasaki survivor