
-
Syria says deadly Israeli strikes a 'blatant violation'
-
Financial markets tumble after Trump tariff announcement
-
Starbucks faces new hot spill lawsuits weeks after $50mn ruling
-
Europe riled, but plans cool-headed response to Trump's tariffs
-
'Shenmue' voted most influential video game ever in UK poll
-
New coal capacity hit 20-year low in 2024: report
-
Revealed: Why monkeys are better at yodelling than humans
-
Key details on Trump's market-shaking tariffs
-
'A little tough love': Top quotes from Trump tariff talk
-
US business groups voice dismay at Trump's new tariffs
-
Grealish dedicates Man City goal to late brother
-
US tariffs take aim everywhere, including uninhabited islands
-
Trump sparks trade war with sweeping global tariffs
-
Israeli strikes hit Damascus, central Syria; monitor says 4 dead
-
Slot 'hates' offside rule that gave Liverpool win over Everton
-
US stocks end up, but volatility ahead after latest Trump tariffs
-
Barca oust Atletico to set up Clasico Copa del Rey final
-
Mourinho grabs Galatasaray coach's face after losing Istanbul derby
-
Grealish strikes early as Man City move up to fourth in Premier League
-
Reims edge out fourth-tier Cannes to set up PSG French Cup final
-
Liverpool beat Everton as title looms, Man City win without Haaland
-
Jota wins bad-tempered derby as Liverpool move 12 points clear
-
Inter and Milan level in derby Italian Cup semi
-
Stuttgart beat Leipzig to reach German Cup final
-
Trump unveils sweeping global tariffs
-
Italian director Nanni Moretti in hospital after heart attack: media
-
LIV Golf stars playing at Doral with Masters on their minds
-
Trump unveils sweeping 'Liberation Day' tariffs
-
Most deadly 2024 hurricane names retired from use: UN agency
-
Boeing chief reports progress to Senate panel after 'serious missteps'
-
Is Musk's political career descending to Earth?
-
On Mexico-US border, Trump's 'Liberation Day' brings fears for future
-
Starbucks faces new hot spill lawsuit weeks after $50mn ruling
-
Ally of Pope Francis elected France's top bishop
-
'Determined' Buttler leads Gujarat to IPL win over Bengaluru
-
US judge dismisses corruption case against New York mayor
-
Left-wing party pulls ahead in Greenland municipal elections
-
Blistering Buttler leads Gujarat to IPL win over Bengaluru
-
Tesla sales slump as pressure piles on Musk
-
Amazon makes last-minute bid for TikTok: report
-
Canada Conservative leader warns Trump could break future trade deal
-
British band Muse cancels planned Istanbul gig
-
'I'll be back' vows Haaland after injury blow
-
Trump to unveil 'Liberation Day' tariffs as world braces
-
New coach Edwards adamant England can win women's cricket World Cup
-
Military confrontation 'almost inevitable' if Iran nuclear talks fail: French FM
-
US stocks advance ahead of looming Trump tariffs
-
Scramble for food aid in Myanmar city near quake epicentre
-
American Neilson Powless fools Visma to win Across Flanders
-
NATO chief says alliance with US 'there to stay'

Climate change boosts risk of extreme wildfires 25%: study
Climate change has sharply boosted the risk of fast-spreading wildfires, according to a Californian study published Wednesday that offers lessons for prevention after recent disasters in Canada, Greece and Hawaii.
Scientists at the Breakthrough Institute, a non-profit research centre, found that human-caused warming increased the frequency of "extreme daily wildfire" by 25 percent on average compared to the pre-industrial era, in a study in the journal Nature.
Examining a series of blazes from 2003 to 2020, they used machine learning to analyse the link between higher average temperatures, dryer conditions and the fastest-spreading blazes -– ones that burn more than 10,000 acres (4,000 hectares) a day.
The impact of climate change varied from fire to fire.
In certain partly dry conditions, global warming pushed the area beyond key thresholds, making extreme fires much more likely. In very dry conditions, the impact was less.
"This means that we should pay the closest attention to the places and times that historically have experienced conditions just on the moist side of these thresholds, but which are being pushed over these thresholds onto the dry side by background warming," lead author Patrick Brown told AFP.
- Fierce wildfire season -
The researchers calculated that the risk could increase on average by 59 percent by the end of the century under a "low-emissions" scenario where global warming is limited to 1.8 degrees Celsius above preindustrial levels, and up to 172 percent in an unbridled high-emissions scenario.
Earth's surface has already warmed 1.2C.
Using data from recorded fires, the researchers measured the probability of a given blaze turning into an "extreme" one. Then they used computer models to calculate how far the post-industrial rise in temperatures had increased that risk.
The study controlled for variables such as precipitation, wind and absolute humidity and the researchers warned that changes in these could make the risk from global warming even worse.
California has suffered a string of extreme wildfires in recent years.
In 2020, more than 30 people died and four million acres were devoured by flames in some of the biggest fires in the state's history. The November 2018 "Camp Fire" killed 86 people.
The study's publication followed a summer of wildfires that killed at least 115 people in Hawaii and forced 200,000 from their homes in Canada.
Greece is battling what EU officials called the bloc's biggest wildfire on record along a 10-kilometre (six-mile) front. It has killed 20 people.
A 2022 United Nations Environment Programme report on wildfires said they are becoming more common due to hotter, dryer conditions caused by climate change, including in regions not traditionally prone to them.
- Fire prevention -
Nature study author Brown said the insights into dryness thresholds could aid prevention measures, for example by indicating the best spots for thinning and prescribed burning of vegetation to reduce the dry natural matter that wildfires feed on, known as "hazardous fuel".
"We are finding that under most conditions, the impact of hazardous fuel reductions can completely negate the impact of climate change," he said.
"It is plausible to have a future of much less wildfire danger despite climate change if we conduct these fuel treatments at scale."
He said the findings could also inform precautions regarding power lines and indicate where monitoring and awareness campaigns should be focussed, and firefighting resources deployed.
Other wildfire experts said awareness of fire risks will become increasingly important for authorities and even holidaymakers.
In a separate briefing by wildfire specialists on Wednesday not related to the study, Andrew Sullivan of Australia's national science agency CSIRO said expenditure was typically "skewed" towards responding to wildfires with not enough money allocated for preventing them.
He said there was a "global need to rebalance expenditure to improve risk mitigation" measures such as managing vegetation and fire-danger forecasting.
Y.Kobayashi--AMWN