A new wave of climate research is sounding a stark warning: Human activity may be driving drought more intensely –and more directly –than previously understood. One example: The southwestern United States has been in a historic megadrought for much of the past two decades, with its reservoirs including lakes Mead and Powell dipping to record lows and legal disputes erupting over rights to use water from the Colorado Rive.

Israel is a desert, and water resources are scarce, but today it produces 20% more water than it needs. What can the world learn from Israel’s experience?

It would likely be complicated, messy and involve big lawsuits, according to experts and former officials.

Glacial meltwater accounts for a significant portion of annual flows in the Indus River Basin, but as glaciers retreat due to climate change, this flow is decreasing, leading to water scarcity. Pakistan is particularly vulnerable to reduction in Indus River Basin flows: it relies on the Indus River for more than 90 percent of its water, and is already grappling with severe water shortages.

Agriculture requires a lot of water. In the drought-stricken Central Valley, researchers have found a win-win for growers.

State lawmakers are poised to devote billions to save the state’s water supply. These are some of the ways the state could spend the money.

An executive order issued in the early days of the Trump administration hit pause on at least $4 billion set aside to protect the flow of the Colorado River. Halted funding threatens the sustainability of the entire system, experts say.

The United States and Mexico are aware of the political and economic importance of the border region. But if water scarcity worsens, it could supplant other border priorities. The two countries should recognize that conditions are deteriorating and update the existing cross-border governance regime so that it reflects today’s new water realities.

Researchers offer a solution — two-way leasing contracts — to water scarcity during droughts amid the tug of economic development, population growth and climate uncertainty for water users in Western U.S. states.