Born in the ice age, humankind now faces the age of fire – and Australia is on the frontline | Tom Griffiths

The bushfires and the plague are symptoms of something momentous unfolding on Earth – an acceleration…

Jacaranda trees in bloom: photographs from Guardian Australia readers

Purple patches across Australia are captured in this selection of shots from a ‘secret garden’ to…

‘An incredible scar’: the harsh toll of Trump’s 400-mile wall through national parks

Samuel Gilbert visited four distinct wilderness areas near the new border wall, which is fragmenting critically…

Huge spider assumed extinct in Britain discovered on MoD training site

Described as ‘gorgeous’ by the man who found it, the great fox-spider has not been seen…

‘They give me the willies’: scientist who vacuumed murder hornets braces for fight

Chris Looney helped dismantle the first nest of Asian giant hornets in the US. Now he’s…

Country diary: boulderers make the most of the rocky terrain

Llanberis, Gwynedd: They felt at the initial holds, arms taking their weight, toes stabbing at edges…

Butterflywatch: is UK experiencing a clouded yellow autumn?

The dynamic migratory butterfly looks to be sticking around beyond the summer I was strolling across…

A Joe Biden victory could push Scott Morrison – and the world – on climate change

International action on emissions reduction will get a huge shot in the arm if the US…

Net zero: what if Australia misses the moment on climate action?

Three of Australia’s biggest trading partners have recently committed to go ‘carbon-neutral’. Experts say it’s the…

‘A tourniquet for things to come’: victims and frontline workers say busg findings don’t go far enough

Australia’s black summer killed 33 people, destroyed thousands of homes and devastated native wildlife. Those affected…