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Sex determination of sea turtles is temperature dependent, with the proportion of female hatchlings increasing when nests are warmer

Similar numbers of female and male green and hawksbill turtles are hatching in the Coral Sea’s Conflict Islands, new research suggests, despite global heating increasingly leading to “extreme feminisation” of sea turtles.

Sea turtles are particularly susceptible to the effects of global heating because their sex determination is temperature dependent, with the proportion of female hatchlings increasing when nests are warmer.

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… to be announced at 12.30pm AEDT. Follow our live blog from 11.30am for the red carpet, emotional speeches and all the reaction

• Find all our bird of the year content
• Download your Australian birds poster as a jpeg or pdf (large file)

The campaigns are over. The votes are in. The scrutineers are in the tally room.

The winner of the 2023 Guardian/BirdLife Australian bird of the year will be announced at 12.30pm AEDT on this website, after voters culled a field of 50 down to 10 for the final day of voting on Thursday.

Find all our bird of the year content

Guardian Australia has produced a glorious A3 poster of Australian birds that can be downloaded here as a high-resolution jpeg or pdf to be printed out. (The pdf is a large file so may take a while to load.)

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European co-legislators reached a provisional political agreement on Thursday to phase out by 2050 fluorinated greenhouse gases (F-gases), in a bid to set higher environmental standards for the rest of the world.

Investor and advisory firm Pollination has identified a series of areas where the fledgling, but fast-evolving biodiversity credit market needs or is likely to see significant developments in coming years.

Almost a year after the scheme was officially launched, Australian carbon project developer GreenCollar has announced the very first issuance of its NaturePlus Credits, which it hopes to establish as a leading global biodiversity credit type.

Ukraine's environment minister has told domestic media sources that the country must adopt a law on a national ETS as early as next year, with an aim of introducing it in 2025, to avoid any negative impact on Ukrainian exports linked to the EU's carbon border adjustment mechanism.

Mountain’s peak has been measured every two years since 2001 and height has varied by almost 5 metres

Mont Blanc, the tallest mountain in the Alps, has shrunk by 2.2 metres since 2021 to its lowest height in recent memory.

The mountain, which is capped by a ridge of ice covering the rock, was measured by a team of surveyors from the Haute-Savoie regional administration, aided by a drone.

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The private sector-led Integrity Council for the Voluntary Carbon Market has named a new interim COO to succeed William McDonnell, who will join Insurance Australia Group as its new CFO.

EUAs retraced on Thursday after the prior session's gains, with energy prices also moving lower across the morning, as markets shrugged off reports that further LNG strikes at key Australian export terminals may lie ahead.

Exclusive: No regulator is monitoring scale of impact of dangerous chemicals on wildlife or public health

A toxic cocktail of damaging chemicals created by road pollution is flowing into England’s rivers and no regulator is monitoring the scale of its impact on wildlife or public health.

More than 18,000 outfalls, such as pipes, and about 7,700 soakaways managed by National Highways discharge rainwater potentially contaminated with heavy metals, hydrocarbons, microplastics and other chemicals from the main road network into rivers and on to land.

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This year is "on track" to be the warmest on record as global September temperatures surged.

The full European Parliament approved on Thursday the designation of Wopke Hoekstra as commissioner for climate action and Maros Sefcovic’s new role as executive vice-president in charge of the Green Deal.

Taiwan has eased a set of management rules for greenhouse gas (GHG) inventories to expand its of third-party emissions accreditation and verification capacity, amid growing domestic concerns over the impact of EU's carbon border adjustment mechanism (CBAM).

Regen Network has established an environmental stewardship credit class for sheep grazing on vineyards, with a first batch of units issued to an estate in California.

Climate crisis funding for poor nations should reach $200bn to $400bn a year by same date, says pre-Cop28 report

Fossil fuel exploration should cease globally by 2030 and funding to rescue poor countries from the impacts of the climate crisis should reach $200bn (£165bn) to $400bn a year by the same date, according to proposals in a UN report before the next climate summit.

Countries were still “way off track” to meet the goals of the 2015 Paris climate agreement, the report found, and much more action would be needed to make it possible to limit global heating to 1.5C above preindustrial levels.

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Bee and hornet hit ground with such force the attacker is sent scarpering, University of Exeter scientists find

Bumblebees are not fast or agile enough flyers to evade an attack from an Asian hornet and an airborne scrap would almost certainly result in victory for the latter.

But University of Exeter scientists have found that when attacked, buff-tailed bumblebees have a dramatic but effective response: simply dropping out of the air “like a brick”, taking the hornet with them.

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Two ratings agencies in India have downgraded the country’s biggest carbon developer’s ratings after it recently filed losses for a second consecutive quarter.

Global emissions rose 0.2% in the first half of the year despite higher solar and wind penetration thanks to drought conditions hampering hydropower generation and pushing more fossil fuel-generated power into the grid.

The tragic felling of the tree is making land managers reflect on how this barren landscape should look in future

Last Wednesday night, Britain was robbed of one of its best-loved trees. Mike Pratt, the CEO of Northumberland Wildlife Trust, describes the venerable, now-recumbent sycamore at Sycamore Gap on Hadrian’s Wall as a “totem tree; a touch point in the landscape”.

But the tree, standing alone in a national park, also reminded some of how nature-depleted England is. As environmentalist Ben Goldsmith said at the time: “That someone would have destroyed this iconic tree is beyond comprehension; but what’s even more shocking is that this was pretty much the only tree in that entire landscape. Our national parks can and should be so much better.”

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Five people have been arrested after Just Stop Oil protesters disrupted a performance of Les Misérables at the Sondheim theatre in London’s West End.

During a performance of the song Do You Hear the People Sing? members of the Just Stop Oil group stormed the stage with banners to boos from the audience.

In a post on X, the group wrote: '4 people are locked to the stage of the French-revolution-themed show. Valjean steals bread to feed a starving child. How long before we are all forced to steal?'

• Just Stop Oil protest disrupts Les Misérables performance in London

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