The Murray-Darling is not just a food bowl, yet the South Australian Royal Commission has found the Murray-Darling Basin Plan is failing its mission to protect the environment as well as irrigators.
While making small volumes of pure water in a lab is possible, it’s not practical. The reaction is expensive, releases lots of energy, and can cause really massive explosions.
Of Australia’s capital cities, Perth has the saltiest tap water, while Melbourne, Hobart, Darwin and Canberra have the least salty. And while all are within guidelines, the variation is striking.
Research shows that when Americans are aware of the scale of food waste, and how much energy and water are used to produce food, they support measures to reduce the problem.
Leftover lactose from cheese production shows early promise as a treatment that can help soils retain water and nutrients, making them more resistant to drought.
After declining for nearly a decade, the number of hungry people in the world is growing again. Climate change, which is disrupting weather patterns that farmers rely on, is a major cause.
Professor of Civil, Environmental & Ecological Engineering, Director of the Healthy Plumbing Consortium and Center for Plumbing Safety, Purdue University
Professor in Practice on Environmental Innovation, School of Social and Environmental Sustainability, University of Glasgow, UK, National University of Singapore
Associate Professor of Environmental Economics and Policy, School of Environment, Science and Engineering, and Fellow of the Marine Ecology Research Centre, Southern Cross University