Warmer weather and receding floodwaters are bringing more mosquitoes, and not just in regional NSW.

Severe storms hit Sydney’s north-west fringe on Sunday but skirted the rest of the city, offering little relief from high humidity.

Dr Vanessa Pirotta is untangling the web of marine life in Sydney Harbour and makes a living delving into whale gunk and boiling blubber.

The deeper the cuts now the better off we will be.

More public transport travel and rail freight are expected to be needed to rein in Australia’s carbon emissions to help the world limit global warming to 1.5 degrees.

The pressure to shop ethically ignores the reality that nothing we do actually matters.

Sydney experienced damaging wind gusts of up to 90 kilometres an hour on Monday evening. More severe weather is expected on Tuesday, heralding an early start to winter.

National weather forecast for Thursday March 23

Social media is much decried, but when ordinary people use it to magnify their compassion for drought-stricken farmers, magic can happen.

More than half the world's turtles and two-thirds of some bird species along Australia's east coast are being found to have ingested plastics as the toll from pollution mounts.

While it might sound like a cool idea to bring animals like the Tasmanian tiger back from extinction, new research shows this would come at the cost of other already threatened species.

Australia’s unique marine wonder is under increasing pressure from rising temperatures, but the science is still being questioned.

Several years ago, 4000 solar panels that had reached the end of their lives were sitting in north Queensland and no one knew what to do with them.

Eve and Adam Dickinson and their two children found the "incredible" lion's mane jellyfish while they were walking on Pakiri Beach, in north Auckland, on Monday.

The images show two scalloped hammerhead sharks dangling lifelessly on drum lines used by the Queensland government under its shark control program.

Facing the possibility of a hostile Trump administration, global scientists and analysts are breathing a sigh of relief at the reinvigorated Democratic campaign.

National weather forecast for Tuesday August 6.

Hopes for quenching rains that would aid farmers and ease the bushfire risks appear to be dimming with fresh indications of El Nino thresholds will be surpassed by the end of spring.

National weather forecast for Saturday August 10.

National weather forecast for Sunday August 11.