US President Barack Obama's new climate plan aims to cut greenhouse emissions from the nation's coal-dominated power sector by 32% by 2030. Will it get through, and how will it affect this year's climate talks?
The term 'carbon tax' is a political poison in Australia, thanks to the previous carbon tax which was actually an emissions trading scheme. Yet ironically, many economists prefer a tax over an ETS anyway.
Prime Minister Tony Abbott said this week that Labor's pledge to source half the nation's power from renewable energy by 2030 will "mean a massive bill, perhaps $60 billion or more, that will have to be carried by the consumers of Australia." Is that right?
The wine industry is sensitive to climate change, but grape growers also have the funding and knowledge to put themselves at the forefront of climate adaptation. Other farmers should watch with interest.
We have the technology to make oil from algae, rather than digging up crude oil from organisms that lived billions of years ago. But bringing it to market will take a force of economic and political will.
There's been a lot of talk about killing feral cats, with the government's recently announced war on cats, with a goal to kill two million by 2020. But let's embrace cats as part of Australia's environment.
Chalk it up as a rare conservation win: humpback whales have bounced back so strongly since the whaling era that there is no longer a need to include them on Australia's official threatened species list.
The history of climate change is writ large in literature - and not just scientific journals. An analysis of Google's vast library shows a rise in use of phrases such as "unusual weather" and "heat wave".
The controversial Shenhua Watermark coal mine in New South Wales recently cleared another hurdle along the way to being granted full approval to proceed. But there are major environmental risks which should still call the project into question.
The Renewable Energy Target now includes wood waste from forestry. But a more sustainable use of Australia's native forests would be to leave them alone and earn carbon credits from the avoided emissions.