The Arctic is particularly vulnerable to climate change, but efforts to tackle it risk alienating the people who live there.
New research published in the journal Nature reveals that more than 1.2 million flow barriers exist on European rivers and that approximately 10% are obsolete.
Downpours in eastern Australia this year have been good for crops and some dams. But when it comes to drought, Australia is not out of the woods yet.
Fish need to cross roads too. But the tunnels built to channel rivers under roads and railways can block their migrations.
Salt storms are an emerging threat, as Lake Urmia dries up and exposes huge salt marshes.
Canada needs to reform budgeting and reporting methods to recognize the true underlying nature and value of expenditures on social infrastructure.
The number of visitors to the restored wetlands is increasing each year, as is the wildlife.
Thousands of dams across the US are aging and overdue for maintenance. Taking them down can revive rivers, restore fish runs and create new opportunities for tourism and outdoor activities.
The review examined hundreds of studies and concluded the lower Murray should remain a freshwater ecosystem, or severe environmental and economic damage will result.
Dams built to hold enormous quantities of toxic mining waste have a long history of spills. Decisions in the Pacific Northwest threaten three free-flowing rivers there.
The ‘New Bradfield’ scheme seeks to revive a nation-building ethos supposedly stifled by bureaucratic inertia. But there are good reasons the scheme never became a reality.
It's imperative that we understand what creates and sustains the delta for the future management of the system.
The real crisis with water supply is that South Africa doesn't know what it doesn't know.
Sea levels are rising, while deltas are being starved of sediment by upstream dams.
A report from The Australia Institute says at least 20 to 30 large private dams have been constructed in the Murray-Darling basin in recent years.
The Australian landscape is very old and the soils in inland areas can be very fragile.
Resettlement plans for large infrastructure projects don't always go according to plan.
Water is crucial to the spread of malaria because mosquitoes breed and lay their eggs in or near bodies of water.
The damage to the dam holding back a reservoir just a mile from the nearest town downriver should focus minds on ensuring civil infrastructure is maintained.
At a time when storms are becoming more frequent and severe, relying on levees for flood control can create as many problems as it solves.