A complete switch to biofuels is neither feasible nor desirable, but they could replace some fossil fuels in transport and heating. If biofuels are produced from waste products, that’s even better.
For phascogales, tree hollows are getting harder to find. I venture into forests and study how well artificial hollows made with chainsaws can replace them.
Scientists studied charcoal layers in the sediment of lake beds across the Rockies to track fires over time. They found increasing fire activity as the climate warmed.
Heat pumps are the technology of choice for heating and cooling buildings more efficiently and with fewer carbon emissions than furnaces and air conditioning.
Scott Morrison may have found the meeting of the leaders of the world’s liberal democracies that aligning himself so closely with former US President Donald Trump was not the most prudent course.
One cold winter doesn’t negate more than a century of global warming. We need the political leadership to set the world on a safer path. Ill-informed tweets by government senators won’t help.
Hugh Saddler, Australian National University and Frank Jotzo, Australian National University
Renewables form an ever-greater share of the electricity mix. But elsewhere in the energy sector – in transport, industry and buildings – emissions reduction is very slow.
A recently released schools policy guide has been receiving some criticism. Reports suggest it instructs teachers to not use terms like “boys and girls”, for instance. This is not entirely correct.
New research looked at wave conditions over the past 40 years, and found wave power has increased since at least the 1980s, mostly in the Southern Hemisphere.
There are significant gaps in what teachers in Ghana know about ozone depletion and climate change, even though these subjects are in the science curriculum.
Climate migrants don’t fit neatly into the legal definitions of refugee or migrant, and that can leave them in limbo. The Biden administration is debating how to identify and help them.
Meg Parsons, University of Auckland, Waipapa Taumata Rau and Lara Taylor, Manaaki Whenua - Landcare Research
Indigenous marine governance is experiencing a revival throughout Oceania, building on traditional worldviews that acknowledge connections between people and all parts of ocean ecosystems.