'Blue carbon' is seen as an increasingly important issue, but it needs to be backed up by better science, reports Mićo Tatalović.

SciDev.Net speaks to UN Environment Programme executive director Achim Steiner at the Eye on Earth Summit (12-15 December) about next year's Rio+20.

Controversy over fracking for natural gas has spread to Africa, where it is feared that the extraction process could deplete water supplies.

The African Union is determined to push ahead with plans for a Pan-African University, despite disputes over several of its five hubs.

Pakistan's water crisis is dire and set to get worse, but numerous research projects are underway to help alleviate the situation.

Climate change will affect the water security of developing countries. Lucinda Mileham explores their priorities as they struggle to cope.

All it takes is a roof, a gutter and a tank to lift the poor out of water drudgery. But is it that simple, ask Aisling Irwin and Aditya Ghosh?

Freshwater supplies are limited, says a report, and to continue with present water-use practices would be "to invite disaster".

Hindu-Kush-Himalayan countries need to share data and collaborate better to tackle climate change, Andreas Schild tells SciDev.Net.

Kenyan meteorologists are joining forces with traditional rainmakers to deliver communities weather forecasts as climate change takes hold.

With artificial glaciers and more, a Himalayan region is regaining food self-sufficiency, writes Surabhi Pudasaini.

Andreas Schild of the International Centre for Integrated Mountain Development talks to SciDev.Net about glacial retreat.

An Indian water filter that uses low-tech rice waste and high-tech nanoparticles could provide clean water to millions of families.

Many new technologies have promised to remove arsenic from drinking water but little has changed on the ground, finds T. V. Padma.

Persuading Cambodian river-dwellers to use a newly designed floating toilet instead of the river could cut soaring diarrhoea rates.

Nanotechnology could help give millions clean drinking water. David J. Grimshaw outlines the potential, the progress and some of the risks.

Can nanosponges solve a continent's water contamination problems? Munyaradzi Makoni investigates.

Is hydroponics — a system using no soil and very little water — a route to increased food security? Some Cape Verdean farmers think so.

The Tibetan plateau is feeling the effects of climate change, with glacial retreat and permafrost degradation among the effects.

A low-tech clay water filter is proving successful in Sri Lanka, cutting disease levels and saving on fuel costs.