Browse Sustainability Matters Daily’s published articles from newest to oldest. This archive is the chronological route through the site; the topic guide is better when you want a curated starting point.
Explore the main subjects
- Start with the Water hub for filtration, reverse osmosis, softening and household water quality.
- Use the Sustainable Products hub for durability, materials, labels and buying decisions.
- Read the Sustainable Eating guide for food choices, waste and certification.
- Explore what makes a sustainable city for transport, buildings, nature and resilience.
- Learn to test environmental claims with our greenwashing examples.
Recent and legacy reporting
The archive includes current practical guides as well as older culture, education and travel pieces that remain useful to readers. Dates and context matter: follow current official guidance for safety, regulation, tests and fast-changing technology.
Return to the latest articles on the homepage, use the site search for a specific question, or visit Write for Sustainability Matters Daily if you can contribute well-sourced specialist knowledge.
All articles
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The First Generation of EV Batteries Is Becoming a Mine
Australia is building capacity to recover lithium, nickel and other critical minerals from old batteries as the first big recycling wave approaches.
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Australia Passed 80% Renewable Power. What Comes Next?
Australia’s main grid passed 80% renewable power for the first time. The milestone also revealed the urgent need for storage and transmission.
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How to Build a Sustainable City: 10 Essentials
What makes a city sustainable? Explore 10 essential systems, a practical planning framework and real examples from Copenhagen, Bogotá and beyond.
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Floating Wetlands Cut Wastewater Emissions
A Phillip Island trial found floating wetlands reduced wastewater lagoon emissions by 22% to 31%, with methane falling by up to 66%.
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Is Bottled Water Distilled? Usually Not
Most bottled water is not distilled. Learn how to read the label and compare distilled, purified, spring and mineral water.
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Flexible Eco-Friendly Materials: Uses, Trade-Offs and Better Choices
A flexible material is not automatically eco-friendly. A film, fabric, foam or bendable composite can reduce weight and material use, yet still be difficult to repair, recycle or recover. The useful question is not whether a material bends. It is whether the complete product delivers the required function with lower impacts across production, use and…
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How to Change Reverse Osmosis Filters Safely
To change reverse-osmosis filters safely, identify every replacement part first, shut off the feed water and any booster-pump power, close the tank valve, relieve pressure, replace and sanitize components exactly as the manufacturer directs, then repressurize slowly and check for leaks. The layout below fits many under-sink systems, but the manual for the exact model…
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Reverse Osmosis Tank Pressure: How to Check and Adjust It
Learn how to measure and adjust reverse-osmosis tank pressure safely, diagnose low flow and recognize when the tank needs replacement.
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Do Electronic Water Descalers Work?
Electronic descalers do not soften water, and evidence is mixed. Learn what they may do, how to test one, and when to choose a softener.
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What Is the Best Drinking Water for Cats and Dogs?
Fresh, potable tap water suits most cats and dogs. Learn when filtered, reverse-osmosis, well or bottled water may be appropriate.
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Why Does Reverse Osmosis Water Taste Bad?
Reverse-osmosis water should not suddenly taste foul, metallic, musty or chemical. A flat or slightly different taste can be normal because RO removes many dissolved minerals. A new or worsening off-taste usually points to overdue filters, insufficient flushing, stagnant water, a storage-tank problem, membrane performance or a change in the incoming supply. If the water…
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Can You Reuse Reverse Osmosis Wastewater?
Reverse-osmosis reject water can sometimes be reused for non-drinking purposes, but only when its source and quality make the proposed use safe. RO does not merely create “extra tap water.” The concentrate stream contains more of the salts and contaminants rejected by the membrane, so it should never be used for drinking, cooking, pet water…