Ben Bouazza and Mehdi El Alem, Associated Press, Sept 24, 2016 Struggling with extremism and economic woes, Tunisia now faces another menace: persistent drought across several regions that is creating new social tensions and threatening farming, a pillar of the economy.
Humans have tripled mercury levels in upper ocean Anne Casselman, 06 August 2014, Nature Pollution may soon overwhelm deep seas' ability to sequester mercury.