In new research, scientists from the University of Cambridge and elsewhere reconstructed changes in summer and winter rainfall from trace elements and oxygen, carbon, and calcium isotopes of a stalagmite from Dharamjali Cave in the Himalaya spanning 4,200-3,100 years ago. They found evidence for a 230-year period of increased summer and winter drought frequency between 4,200 and 3,970 years ago, with multi-decadal aridity events centered on 4,190,...
