Big sewer pipes take all sewage to a place where it is treated. This place is called a sewage treatment plant.
You flush the toilet. Down it goes. What happens after that? Clancy, age four, wants to know.
Eclipses are fun, but no one wants to be left in the dark by a blackout.
The solar eclipse offered electricity network operators a "live drill" in how to cope with fluctuating output from renewable energy. They passed with flying colours.
Tonight on the ABC's Catalyst, scientist Tim Flannery asks if seaweed can save the world. It's a bold claim for algae, but seaweed could play a key role in keeping climate change in check.
With some tweaks to the recipe, cement and concrete can be made kinder to the planet.
Cement has a huge greenhouse footprint, largely because the chemical process by which it is made releases carbon dioxide. But there are several different ways for cement to green up its act.
Smoke from hazard reduction burning has blanketed parts of Sydney, as firefighters prepare for a ‘horrific’ bushfire season.
AAP Image/Dean Lewins
In 2013 a mild and dry winter led to some of the most destructive bushfires in NSW history. Now new modelling shows 2017 record-breaking winter warmth has created worryingly similar conditions.
Fire threatening a house in Pelican Bay in 2006. If you need to shelter from a fire in your house, know where your exits are and be aware of surrounding vegetation.
Leaving early is the best response to a bushfire, but it's not always possible. Every house is different, but there are some general guidelines for finding the safest spots to shelter in your home.
Migrating humpback whales avoid loud, nearby sounds.
Humpback whales are deterred from their migration routes by the noise of air guns used to survey the ocean floor for oil and gas deposits, a new study has found.
Coal-fired power stations, metal smelting and vehicle emissions all pump mercury into the atmosphere.
Australia is the 16th-largest emitter of mercury in the world. A huge amount comes from coal power stations – and a new report argues our pollution guidelines are hopelessly lax.
Former US Vice President and Chair of the Climate Reality Project Al Gore and Victoria’s climate and energy minister Lily D'Ambrosio (right) ride on a tram after speaking at the climate conference in Melbourne.
Taking inspiration from the spread of world religions, Quentin Atkinson and Shaun Hendy argue scientists need to do more to signal commitment to ideas they want to spread.
Amid a sea of troubles – including the premature loss of their CEO and a money-laundering scandal – the CBA is facing a shareholder lawsuit.
AAP Image/Dave Hunt
A new lawsuit against the CBA puts climate change in a new legal light: a financial hazard. The case opens up fresh lines of attack on institutions that contribute to climate change.
Cutting energy use takes more than just the flick of a smartphone.
Smart appliances, which let you control lights and power outlets via your phone, promise to cut energy bills. But research suggests these gadgets are confusing, and can just as easily raise power use.
Social media posts, such as this image uploaded to Flickr, can be repurposed for reef health monitoring.
Sarah Ackerman/Flickr/Wikimedia Commons
Mining social media posts from tourism hotspots such as coral reefs could turn tourists into environmental citizen scientists without them even realising it.
Avoiding fires in Indonesia’s peatlands should be a common goal of everyone involved.
Antara Foto/Jessica Helena Wuysang/ via REUTERS
Indonesian peatlands are important to many people: farmers, bureaucrats, businesspeople, and conservationists. But preserving this value for everyone will mean listening to everyone's concerns.
Information about discounts will be simpler, but you’ll still have to do the legwork to shop around.
AAP Image/Julian Smith
The government's deal with electricity retailers to provide simple information to customers about their discounts and bills is a welcome step, but doesn't cut to the heart of the power price issue.
Gene drives aim to deliberately spread bad genes when invasive species such as mice reproduce.
Colin Robert Varndell/shutterstock.com
Releasing just 100 mice carrying a faulty gene designed to stop them reproducing can remove an entire population of 50,000, a new study shows, paving the way for new eradication efforts.
Environmental threats in the Pacific Islands can be cultural as well as physical.
Christopher Johnson/Wikimedia Commons
Australia is good at 'hard hat' responses to crises such as cyclones. But a new environmental declaration on the Pacific Islands points out that the best approach is more well-rounded and subtle.
Thredbo, scene of the latest attack on the Bureau of Meteorology’s methods.
AAP Image/Alison Godfrey
Three years ago The Australian newspaper launched a broadside at the Bureau of Meteorology. But when it did it again this week, it seemed to get less traction from the top echelons of government.
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.
Solar PV outstripped coal as the leading source of new electricity generation worldwide last year.
AAP Image/Lukas Coch
Solar PV and wind energy have overtaken coal as the leading sources of new electricity generation worldwide, with falling prices and new storage technologies making clean energy ever more attainable.
The stereotype of the conventionally attractive female weather reporter is alive and well on Australian television.
The weather segment at the end of news bulletins has stuck to a familiar format for more than 50 years. But the question of who should actually present the weather has been in a constant state of flux.
A new study, recently published in the journal Bird Conservation International, will help inform the International Union for Conservation of Nature and Natural Resources (IUCN) Red List of Threatened Species.
A team of researchers led by Edith Cowan University have surveyed the PNG island of New Britain to see how the bird population is faring. There's good news and bad news.
A boy plays cricket among smoke in Karachi. Deaths from air pollution across the globe will increase as climate change accelerates.
A new study suggests climate change will cause changes to patterns of ground-level ozone and smog – two deadly pollutants set to increase deaths by about 260,000 worldwide by the end of the century.
Free-range egg producers trade heavily on their implied ethical and nutritional value. But what are you really getting?
After Snowdale Holdings was penalised A$1 million for lying about their eggs being free-range, here are some tips on getting what you pay for in the supermarket.
Giant kelp can grow up to 60cm a day, given the right conditions.
In an extract from his new book, Tim Flannery explains how giant kelp farms could suck carbon dioxide from the air and store it in the ocean's depths, while encouraging species like fish and oysters.
Feral pigs are found in every state and territory in Australia.
Swine brucellosis is spreading from Queensland into New South Wales. It's carried by feral pigs and poses a real risk the people and dogs that hunt them.