Water from an irrigation system sprays flowering cotton plants on the farm of Allen Entz in Hydro, Okla, Aug. 16, 2012.
AP Photo/Sue Ogrocki
The Ogalalla Aquifer is a vast underground lake that irrigates farms across the US Great Plains. It took thousands of years to fill, but human use could drain it in roughly a century.
Desalination is an extraordinarily expensive option.
Farmers are calling for South Australia to ramp up its desalination plant to free up more water from the Murray Darling.
The summer of 1976 was a scorcher.
PA/PA Archive/PA Images
The heatwave is unlikely to cause the price hikes of 1976 for a number of reasons.
Lagoons and vineyards from Gydo Pass in the Western Cape. Water is crucial for such commodities.
In periods of water stress, farmers need support, research assistance and empathy from governments and competing water users.
Despite billions spent on trying to save water in the Murray Darling Basin, results have been disappointing.
A dozen leading researchers have issued an urgent call to action for the Murray-Darling Basin, arguing that the billions spent on water-efficient irrigation have done little for the rivers' health.
Zimbabwe's new administration has promised to revive the country's agricultural sector. Here's what it needs to do.
Affordable tractors improved food security in Nigeria
Mugisha Don de Dieu/Flickr
There were some African food security initiatives from 2017 that deserve a special mention for the precedent they set.
An Egyptian farmer tries to irrigate his land with water from a well.
Reuters/Mohamed Abd El Ghany
At present, the Middle East and North African region contains 7% of the world's population but only has access to 1.5% of its renewable freshwater supply through rainfall.
Under the proposal, irrigators would have to submit a statement that tallies with aerial images of their water use.
AAP Image/Cubbie Group
Allegations of water theft have thrown the Murray-Darling Basin Plan into crisis. The solution could involve users declaring their annual water use, subject to random audits - like a tax return.
Irrigation pumps along the Barwon River in New South Wales.
AAP Image/Dean Lewins
The system that allocates water use in Australia's largest river basin relies on a shared commitment by states to uphold the rules. New allegations of water theft threaten to break that trust.
Children walk through a maize plantation in Zimbabwe, one of the countries in which irrigated areas might be double the officially-recognised area.
Official statistics in Tanzania do not capture small-scale irrigation, meaning that it's impact is unclear. Yet new research reveals that it's two to three times greater than previously thought
Water and agriculture is high on the agenda at this year’s climate talks.
The current climate talks in Morocco are a golden opportunity for making strides on the adaptation of African agriculture. African countries need the tools necessary to do so.
The Millennium drought had a huge impact on the Murray-Darling river system.
Droughts are much bigger and slower than other natural disasters that hit Australia - meaning that despite their huge impacts, we still haven't figured out how best to protect ourselves.
The Ord River was targeted for agricultural expansion in the 20th century.
Ever since British settlement, water rights in Australia's north have favoured landowners over traditional owners, effectively locking Aboriginal people out of agricultural development.
Blue-green algae in the Murray River upstream of Mildura in April.
Toxic algal blooms were unheard of in Australia's major waterways before 1991. Now the Murray River has been struck by four major events in less than a decade, with more likely in the future.
Barkindji protest outside Parliament in Canberra.
For the Barkindji people, the Darling River has been a symbol of Aboriginal survival since colonial times. Now, the once busy NSW town of Wilcannia is in danger of losing its water.
Northern rivers could increase Australia’s irrigated land by 50%. But we need to think about the environmental impacts.
It's full steam ahead for bringing vast increases in farming to northern Australia. In fact, probably too fast to adequately consider the environmental impacts.
Maize is a staple food in South Africa. Its production is likely to decline by half this year due to drought. The poor will be the hardest hit.
South Africa has been hit by a severe drought and will not be able to produce enough maize - its staple food - in 2016. This will prompt a rise in imports and therefore food prices.
Open-air irrigation: so last century.
A government for the 21st century needs to work out how we can grow our food, manufacture goods and dispose of waste without making such a huge mess.
The Murray-Darling: a complex river system with a complex set of regulations to match.
AAP Image/Caroline Duncan Photography
Water isn't straightforward. And by putting the Nationals in charge of policy for water assets like the Murray-Darling Basin, the government will trigger a complex round of bureaucratic musical chairs.