Peter Hannam Convert 60 minutes of near darkness into a permanent shift in household energy use - that's the Australian goal of Earth Hour on Saturday.
Andrew Darby Australia's Antarctic researchers have taken a rare look at the luminous world under the polar sea ice, and brought it home.
Peter Hannam WE MAY be a nation of sun-worshippers, but when it comes to forecasting where the sun shines longest, Australia's energy authorities are stuck in the dark ages.
Lenore Taylor They've conferenced in empire-style Parisian ballrooms and dined in Kyoto on food cooked by a genuine Iron Chef.
Selected images, reproduced with permission, from Southern Light: Images from Antartica by David Neilson. Published by Snowgum Press and available from all good bookshops.
David Wroe Australia is set to get its first radioactive waste dump with the government agreeing to a Coalition demand for $10 million for the Northern Territory, which will host the dump.
Louise Gray, London LONDON: After several failed attempts, Queen Elizabeth went green when the final turbine was installed on a hydroelectric scheme to power Windsor Castle.
It's a video that has melted the hearts of hundreds of thousands.
Republicans in Congress are pressing for a vote today on one of the stranger elements of their environmental agenda - a ban on the adoption of energy-efficient lightbulbs.
Chinese authorities have set tougher rules to combat air pollution by ordering all big cities to monitor tiny particles that do serious damage to health.
Two tiny big cats have added to the cute factor at a Gold Coast theme park this Easter.
Green is, like, so hot right now, thanks to Australian model Miranda Kerr, who has been named Earth Hour's 'global ambassador'.
The state government approves a $484 million wind farm in Victoria's Western District.
Crabs, lobsters and other crustaceans represent the most common species in the world's seas, and the waters of Australia and Japan are the most diverse, according to a vast inventory of marine life...
The new lighting system which illuminates Jenolan Caves is kinder to the limestone by reducing the heat's impact, and shows off the glories in a spectacular way. + More Herald photos and multimedia
Katherine Feeney Lights and internet services are slowly being switched back on across Brisbane as the city recovers from the week's floods.
Damien Murphy With rainfall at record low levels, farmers across Australia are facing some of the toughest drought conditions in years.
Leesha McKenny A warm burst of autumn emerged from the fog to bask Mother's Day in above-average temperatures.
Deborah Gough Winter well and truly arrived in Melbourne today, putting an abrupt stop to an otherwise balmy month of May.
Tom McIlroy and Stephanie Anderson Snow has fallen across the slopes overnight as the mercury plummeted across NSW and the ACT.