Australia Welcomes Lifting of UNESCO Threat to List Great Barrier Reef as World Heritage in Danger 

A colony of mushroom leather coral grows on the Great Barrier Reef off the coast of Cairns, Australia October 25, 2019. (Reuters)
A colony of mushroom leather coral grows on the Great Barrier Reef off the coast of Cairns, Australia October 25, 2019. (Reuters)
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Australia Welcomes Lifting of UNESCO Threat to List Great Barrier Reef as World Heritage in Danger 

A colony of mushroom leather coral grows on the Great Barrier Reef off the coast of Cairns, Australia October 25, 2019. (Reuters)
A colony of mushroom leather coral grows on the Great Barrier Reef off the coast of Cairns, Australia October 25, 2019. (Reuters)

The Australian government on Tuesday welcomed a draft UNESCO decision to a lift a threat of downgrading the Great Barrier Reef to an endangered World Heritage site.

The UN cultural agency and the International Union for Conservation of Nature recommended in November of last year that the world’s largest coral reef system be added to the List of World Heritage in Danger due to threats including rising ocean temperatures.

But UNESCO issued an updated a report in Paris on Monday that said it would be appropriate to re-evaluate whether the famed tourist attraction off Australia’s northeast coast fitted the World Heritage in-danger criteria.

The report recommended Australia submit a progress report to the World Heritage Committee by February on its commitments to make environmental improvements.

The World Heritage Committee will consider the draft recommendation in September.

Prime Minister Anthony Albanese took the draft UNESCO decision as a vote of confidence in his center-left Labor Party government that was elected last year.

“This confirms my government is working hard to protect the reef, is acting on climate change and that the rest of the world has taken notice,” Albanese told reporters.

Albanese’s government and the previous conservative government had lobbied against UNESCO downgrading the World Heritage status given to the reef in 1981. There are fears that a World Heritage in-danger listing would damage a tourism industry that revolves around the reef and employs more than 64,000 people.

The Labor government was elected in May last year, two months after a 10-day UN fact-finding mission that visited the reef.

The new government argued that UNESCO’s criticisms of government inaction were outdated.

The new government has committed Australia to reducing its greenhouse gas emissions by 43% below the 2005 level by 2030.

The previous government only committed to a reduction of 26% to 28% by the end of the decade.

Marine ecologist Lissa Schindler said the UNESCO report found that Australia needed to do more to address climate change and water quality threats to the reef, including more ambitious greenhouse gas emission reduction targets.

“I think that they’ve started off and done a really good job and there’s more to do,” Schindler told Australian Broadcasting Corp. of the government’s performance.

Global warming is the greatest threat to coral reefs around the world. Heat stress causes coral to bleach and bleaching events on the Great Barrier Reef in 2016, 2017 and 2020 damaged two-thirds of its coral.

The latest UNESCO report noted data submitted by Australia in September last year showed the highest level of hard coral cover in the northern and central regions of the reef since monitoring began 36 years ago.

It also noted the government had canceled the previous government’s plans to build two major dams in Queensland state that would have affected the reef’s water quality.

In February, Australia for the first time rejected a coal mining application based on environmental law, with the new government citing the open-pit mine’s potential harm to the nearby Great Barrier Reef.

In July 2021, the previous government garnered enough international support to defer an attempt by UNESCO to list the reef as in-danger.

The Great Barrier Reef accounts for around 10% of the world’s coral reef ecosystems. The network of more than 2,500 reefs covers 348,000 square kilometers (134,000 square miles).



Scientists Exploring How to Beat Heat for Better Sleep

(FILES) A woman with her face covered walks past air coolers kept on display outside a shop during a hot summer day amid severe heatwave in Varanasi, India on May 30, 2024. (Photo by Niharika KULKARNI / AFP)
(FILES) A woman with her face covered walks past air coolers kept on display outside a shop during a hot summer day amid severe heatwave in Varanasi, India on May 30, 2024. (Photo by Niharika KULKARNI / AFP)
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Scientists Exploring How to Beat Heat for Better Sleep

(FILES) A woman with her face covered walks past air coolers kept on display outside a shop during a hot summer day amid severe heatwave in Varanasi, India on May 30, 2024. (Photo by Niharika KULKARNI / AFP)
(FILES) A woman with her face covered walks past air coolers kept on display outside a shop during a hot summer day amid severe heatwave in Varanasi, India on May 30, 2024. (Photo by Niharika KULKARNI / AFP)

Cool showers and less coffee or alcohol: sleep quality is being harmed by hotter temperatures caused by climate change, and scientists say we need to learn how to adapt.

The human brain is very sensitive to heat, with higher temperatures raising the body's central thermostat and activating stress systems.

Scientists are increasingly exploring mechanisms that can help the body adapt to rising temperatures affecting our sleep and leading to health complications.

"Rising temperatures induced by climate change and urbanization pose a planetary threat to human sleep, and therefore health, performance, and wellbeing," according to a 2024 review of scientific literature published in the journal Sleep Medicine.

Humans lost an average of 44 hours of sleep a year during the first two decades of the 21st century compared to earlier periods, according to a 2022 study published in the journal One Earth, which linked the data to rising temperatures.

The intensification of global warming could lead to an annual loss of 50 to 58 hours of sleep per person by 2099, according to research led by Kelton Minor, from the University of Copenhagen, based on data gathered from more than 47,000 individuals in 68 countries.

"Interventional studies and field experiments are now urgently needed to foster adaptation and safeguard the essential restorative role of sleep in a hotter world," Minor and other authors of the paper said.

Neurons regulating temperature and sleep in the brain are highly interconnected, and lowering the body's internal thermostat is key to improving sleep quality.

Adapting to heat comes at a cost to the body, according to Fabien Sauvet, a researcher at Paris Cite University.

"We sweat more and faster, for example, but it requires additional hydration. And it has limits, so during heatwaves, the most important thing is to adapt our behavior," such as activities, schedules and clothing, Sauvet said.

But humans could "tolerate higher temperatures than commonly thought", he added, pointing to several studies showing that good sleep quality can be achieved with a room temperature of up to 28 degrees Celsius (82.4 degrees Fahrenheit).

Challenging "the false belief that the bedroom must be at 18-20C", he said that sleeping in light clothing such as a t-shirt and shorts, and with a simple sheet as well as good ventilation, could help dealing with a few more degrees.

"If we always sleep with air conditioning, we will never acclimatize," he said.

Armelle Rancillac, a neuroscientist at the Center for Interdisciplinary Research in Biology, said anything beyond 28C "becomes much more complicated".

An excessive lack of sleep is known to disrupt the body's recovery.

In the short term, this can lead to drowsiness, fatigue and a higher risk of accidents at the workplace or on the road.

In the long run, it can create a harmful sleep "debt", impacting our metabolism and increasing the risk of weight gain, diabetes, cardiovascular diseases and even neurodegenerative diseases like Alzheimer's, Rancillac said.

A sleep deficit can also reduce stress resistance and have a negative impact on mental health.

To sleep better in a hotter environment, Rancillac stressed that there is a need to "eliminate or at least pay attention to sleep enemies".

Before bedtime, it is recommended to take a cool shower -- but not an icy one -- reduce stimulants like coffee, and limit alcohol, which facilitates falling asleep but slightly raises the internal body temperature.

Avoid hot tubs after a workout, opting instead for outdoor temperatures or a cold bath, said Sauvet.

Napping during the hottest hours of the day have also been proven to mitigate the impacts of a sleep deficit.

Short naps -- "30 to 40 minutes, and before 2:00 pm" -- are ideal, so as not to interfere with a good night's sleep, according to the researcher.