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As the oil and gas capital of the world, Houston should have known storms like Harvey were coming.

Sydney is likely to post one of its coldest weeks of winter just as the season makes way for a burst of spring.

Claims that Shenhua's restricted coal mining will avoid affecting the aquifers of the rich farmlands of the Liverpool Plains are "false and ignorant", former state and private agronomists have said in a letter to Premier Gladys Berejiklian.

Australia produced enough renewable energy to power more than 70 per cent of households last financial year, new data shows, but advocates warn the booming industry will flounder unless the Turnbull government commits to a clean energy target.

The billionaires have joined other business giants backing a start-up that makes meat from self-producing animal cells.

The biggest overhaul of native vegetation laws in NSW in a generation is sending mixed signals.

At least eight people were killed and many are still missing after one of the strongest typhoons on record barrelled into southern Chinese territory of Macau.

Although the gift may have seemed like an appropriate gesture, it has been criticised by animal rights campaigners.

The unusually warm and dry winter across much of NSW has prompted the Rural Fire Service to bring forward the official start to the fire season for nine local government areas including the Blue Mountains.

The paucity of independent monitoring of waste water from coal mines in NSW is leaving communities exposed to decades of pollution, long after mining operations have ceased, Ian Wright, a leading water ecologist, said.

Weather agencies including Australia's must step up cooperation to close a "widening gap in capacity" with developing nations, with the urgency of action increasing as the planet heats up, David Grimes, president of the World Meteorological Organization, says.

Coal mining in Sydney's catchment is having a "cumulative and possibly accelerated" impact on water flows but its full effect is unknown because of a lack of data and monitoring.

There's more to protecting yourself than wearing an ice cream bucket on your head.

Damaging winds are forecast to batter Sydney well into the weekend, keeping emergency crews busy clearing downed trees and powerlines, and restoring electricity to affected homes and businesses.

Cyclonic-strength wind gusts have hammered Sydney and most of eastern NSW, disrupting air travel and stranding trains on the Sydney Harbour Bridge.

Cyclonic-strength wind gusts have hammered Sydney and most of eastern NSW, disrupting air travel and stranding trains on the Sydney Harbour Bridge.

Glen Turner's family says in a letter to the government new native vegetation codes will diminish "the value of his life".

The controversial waste management magnate behind plans to build a massive "energy from waste incinerator" near homes in western Sydney defended his environmental track record before a fiery parliamentary inquiry into the safety of the proposal on Thursday.

Most of Australia can expect a hotter-than-average spring driven in part by unusually warm waters off the east coast, increasing the chances of an early and active fire season in the south-east.

NSW planning rules that require greenhouse gas emissions be taken into account when approving major projects will be tested in court in a challenge to a coal mine extension.

There are believed to be only around 100 white moose in Sweden.

It was another hot August night for Sydney residents with the temperature warmer at midnight than it was at midday on Tuesday.

A second day of heavy pollution levels over Sydney caused by controlled fires in the Blue Mountains has prompted calls for earlier warnings and a review of the costs and benefits of hazard-reduction burns.

​The world's largest nesting spot for endangered green sea turtles will be made over to stop baby turtles drowning and adults dying from heat exhaustion.

Australia's biggest coal-fired power stations are permitted to dump toxic pollutants on nearby populations far in excess of overseas counterparts, even those in China, a survey by Environmental Justice Australia reveals.

A thick blanket of smoke has left Sydneysiders breathing "very poor" air, with more hazard burns expected to keep the haze around for another day.

The Commonwealth Bank has been blasted for its first climate policy statement that was scant on detail and lagged the commitments of its banking peers in Australia.

Sydney residents woke to a smoky sunrise due to hazard reduction burning around the city.

Sydneysiders are making the most of a warm winter, enjoying the outdoors in parks and beaches across the city.

A possible expressway extension may be the reason for stalling a push to give the Royal National Park global recognition, the Greens say.