ScienceDaily (Sep. 23, 2010) — In recent decades, the rate at which humans worldwide are pumping dry the vast underground stores of water that billions depend on has more than doubled, say scientists who have conducted an unusual, global assessment of groundwater use.

Global map of groundwater depletion, measured in cubic meters of water per year. (Credit: Image courtesy of American Geophysical Union)

By Syful Islam DHAKA, Bangladesh (AlertNet) - Worsening sea water storm surges and overuse of irrigation have left fields, wells and ponds in parts of southern Bangladesh too salty to grow crops, leading to a growing exodus of farmers from the region.

Changes across global economy expected as result of water shortages

“In early 2008, Saudi Arabia announced that, after being self-sufficient in wheat for over 20 years, the non-replenishable aquifer it had been pumping for irrigation was largely depleted,” writes Lester R. Brown in his new book, Plan B 4.0: Mobilizing to Save Civilization (W.W. Norton & Company). “In response, officials said they would reduce their wheat harvest by one eighth each year until production would cease entirely in 2016.