EnvironmentVolcanic eruptions may have helped spark the French Revolution Social upheaval across Europe between 1250 and 1860 correlates with volcanic eruptions, reduced sunspot activity and surging food prices 51¶¯Âþ
EnvironmentPacific Ocean changes may 'lock in' US megadrought for decades A major cycle of Pacific Ocean temperatures is shifting due to climate change, and that could drive decades of megadrought in the western US 51¶¯Âþ