Tens of millions of people in south and southeast Asia routinely consume ground water that has unsafe arsenic levels. Using hydrologic and (bio)geochemical measurements, the researchers show that on the minimally disturbed Mekong delta of Cambodia, arsenic is released from near-surface, river-derived sediments and transported, on a centennial timescale, through the underlying aquifer back to the river.

An $11 billion plan to restore the Everglades will likely get an overhaul after a major land deal last week by the state of Florida. The state's $1.75 billion purchase is intended to create wetlands that will speed up the delivery of water to the thirsty ecosystem.

Governance in the water sector is crucially important since the overarching goal of water security is to ensure the mitigation of global water crisis. Water security in mainland South Asia (Pakistan, India, Bangladesh, Nepal and Bhutan) hinges upon the fulfillment of two conditions.

The effect of sand mining on the economic performance of groundwater irrigation has been studied in the Panruti taluk of Cuddalore district in Tamil Nadu. A comparison of water productivity for different farms-size categories has been done in sand mining and non-sand mining blocks. The cropping sequence, cropping intensity, irrigation particulars, investment pattern on tubewells, use of different HP-motors, etc. have been studied in sand mining and non-sand mining blocks.

While environmentalists may blame climate change for the worst floods in the Midwest since 1993, dams and river straightening have a role too.