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Australian conservation groups have started an ambitious campaign to plant 100,000 trees in an effort to neutralise the country's carbon footprint.

Aussie Ark, WildArk and re:wild are looking to plant the thousands of trees in the Mongo Valley and Barrington Wildlife Sanctuaries in northern NSW.

The groups last year planted 26,000 rainforest and eucalyptus trees at the Mongo Valley site.

It's estimated the average Australian has a carbon footprint of about 15 tonnes of CO2 per year, but trees remove or 'sequester' carbon dioxide from the atmosphere and convert it into organic carbon.

Along with neutralising the carbon foot print, more trees will also address the issues caused by deforestation.

"Australia is one of the most important nations on earth for biodiversity," Aussie Ark director Liz Gabriel said. "Most of Australia's wildlife is found nowhere else in the world. Yet it is disappearing.

"We must rebuild their habitats and address the threats facing them to ensure our children and their children have a world full of wildlife to enjoy and protect."

WildArk General Manager Kirstin Scholtz said catastrophic bushfires and floods had destroyed large sections of NSW in recent years.

"It is up to all of us to take action and start rebuilding habitat so that our precious wildlife have somewhere to call home," she said.

Australians can purchase one of the trees for $5 through the Aussie Ark website. All of the trees will be planted at the two sanctuaries.

© AAP 2022

Todd Payten admits he faces a welcome selection headache after Scott Drinkwater excelled in North Queensland's 30-4 NRL demolition of Gold Coast.

Filling in at fullback for injured star Hamiso Tabuai-Fidow, Drinkwater had a direct hand in three of his team's five tries, scoring one of his own, at Queensland Country Bank Stadium on Saturday.

The Cowboys' defence was just as impressive, holding their opposition to just one try at home for third time this season as they moved to fourth on the ladder.

The pick of Drinkwater's best moments was a piece of brilliance in the 31st minute when he went untouched from a scrum, showing and going past two defenders before dummying past David Fifita in the corner to score.

Cowboys coach Payten indicated he would need to find a place for Drinkwater somewhere when Tabuai-Fidow returns in the next week or two.

"It's a good headache to have," Payten said.

"Scotty was strong tonight and he had some classy involvements."

The Cowboys (4-3) enjoyed the lion's share of possession throughout, pinning the Titans in their own half with deep kicks and the defensive line speed they've adopted through seven rounds.

The loss saw the Titans fall to 2-5 after starting the season with high hopes for their talented squad.

"No one's happy about it. We've got no answers at the moment," said Titans coach Justin Holbrook.

"We're trying stuff, it's not working what we're changing and we go to go back to the drawing board and have a big week."

Holbrook experimented by moving human wrecking ball David Fifita to the centres - perhaps hoping to replicate the success of Cronulla's Siosifa Talakai - but it fell well short of the mark as Fifita was outclassed and outgunned by Valentine Holmes.

"We had to do it for injury but also wanted to test it out there," Holbrook said of the positional switch.

"We've got to try things, we're not winning games. So we tried it but there's limited preparation there."

After taking a 16-4 lead into the break, the Cowboys ran in two unanswered tries in the second half with Gold Coast unable to capitalise on their numerical advantage when Jeremiah Nanai went to the bin in the 52nd minute.

Upon returning to the field, Nanai immediately latched onto a kick from halfback Chad Townsend to score untouched with the Titans goal-line defence appearing uninterested in getting a hand on the 19-year old.

Drinkwater then put a hard-running Heilum Luki through a hole in the 72nd for the final four-pointer.

In the first half, Tom Dearden, Murray Taulagi and Drinkwater all found the line for the hosts while the Titans ran one in through Jamayne Isaako.

© AAP 2022

Twitter says it will no longer allow advertisers on its site who deny the scientific consensus on climate change, echoing a policy already in place at Google.

"Ads shouldn't detract from important conversations about the climate crisis," the company said in a statement outlining its new policy on Friday.

There was no indication that the change would affect what users post on the social media site, which along with Facebook has been targeted by groups seeking to promote misleading claims about climate change.

The announcement coinciding with Earth Day came hours before the European Union agreed a deal requiring big tech companies to vet their sites more closely for hate speech, disinformation and other harmful content.

Twitter said it would provide more information in the coming months on how it plans to provide "reliable, authoritative context to the climate conversations" its users engage in, including from the Intergovernmental Panel on Climate Change.

The UN-backed science panel's reports on the causes and effects of climate change provide the basis for international negotiations to curb climate change.

The company already has a dedicate climate topic on its site and offered what it described as "pre-bunks" during last year's UN climate conference to counter misinformation surrounding the issue.

© AP 2022