Some species in the Southern Hemisphere survived the asteroid strike that wiped out the dinosaurs 66 million years ago because they were hibernating or buried underground to escape cold weather, researchers believe.
The Chicxulub asteroid hit what is now the Yucatan Peninsula in Mexico during springtime in the north, a catastrophic event that wiped out 76 per cent of all species including dinosaurs and ammonites, according to a new study in the journal Nature.
The timing of the strike had a profound effect on animal populations as the Northern Hemisphere was hit at a crucial period in the breeding cycle, researchers said.
Ecosystems in the Southern Hemisphere, where it was autumn, recovered up to twice as fast compared with the north, where animals were on the surface foraging for food, reproducing and rearing their young.
Researchers believe that some birds and crocodile species in the Southern Hemisphere survived the impact of the 12-kilometre-wide asteroid and the resulting nuclear winter and were able to spread to other parts of the world.
“If you were on the surface when the meteorite strikes, you were likely to be killed,” said Melanie During, of Uppsala University in Sweden, one of the authors of the paper. “The reign of the dinosaurs ended in spring.”
The immediate impact of the meteorite strike was felt up to 3,500 kilometres away and included tsunamis and large-scale forest fires.
Slivers of molten rock were blasted into space by the impact of the asteroid before crystallising and raining back to Earth as deadly glassy bullets.
Researchers studied the remains of filter-feeding sturgeon and paddlefish in North Dakota, United States, that died within an hour of the asteroid strike after the shards clogged their gills during a river surge.
“This deposit literally looks like a car crash frozen in place. It looks like the most violent thing I have seen preserved in pristine conditions,” Ms During said.
Researchers from Sweden, the Netherlands, UK, France and Belgium used carbon dating and analysed bone growth patterns of the fish to conclude that the asteroid hit around April, when springtime temperatures were similar to today.
“To be able to fight the nuclear winter you first need to survive the actual impact,” Ms During said.
“If hibernating, that increased your chances. If you sealed yourself in a burrow or sheltered underwater, that could help you. Anybody in the Southern Hemisphere already sheltering had a much better chance of surviving.”
The mass extinction was likely to have unfolded over several thousand years, with rapid climate change triggered by the meteorite strike.
The specs
Engine: 4.0-litre V8 twin-turbocharged and three electric motors
Power: Combined output 920hp
Torque: 730Nm at 4,000-7,000rpm
Transmission: 8-speed dual-clutch automatic
Fuel consumption: 11.2L/100km
On sale: Now, deliveries expected later in 2025
Price: expected to start at Dh1,432,000
Specs
Engine: 51.5kW electric motor
Range: 400km
Power: 134bhp
Torque: 175Nm
Price: From Dh98,800
Available: Now
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How has net migration to UK changed?
The figure was broadly flat immediately before the Covid-19 pandemic, standing at 216,000 in the year to June 2018 and 224,000 in the year to June 2019.
It then dropped to an estimated 111,000 in the year to June 2020 when restrictions introduced during the pandemic limited travel and movement.
The total rose to 254,000 in the year to June 2021, followed by steep jumps to 634,000 in the year to June 2022 and 906,000 in the year to June 2023.
The latest available figure of 728,000 for the 12 months to June 2024 suggests levels are starting to decrease.
if you go
The flights
Fly direct to Kutaisi with Flydubai from Dh925 return, including taxes. The flight takes 3.5 hours. From there, Svaneti is a four-hour drive. The driving time from Tbilisi is eight hours.
The trip
The cost of the Svaneti trip is US$2,000 (Dh7,345) for 10 days, including food, guiding, accommodation and transfers from and to Tbilisi or Kutaisi. This summer the TCT is also offering a 5-day hike in Armenia for $1,200 (Dh4,407) per person. For further information, visit www.transcaucasiantrail.org/en/hike/
RACE SCHEDULE
All times UAE ( 4 GMT)
Friday, September 29
First practice: 7am - 8.30am
Second practice: 11am - 12.30pm
Saturday, September 30
Qualifying: 1pm - 2pm
Sunday, October 1
Race: 11am - 1pm
UAE squad
Esha Oza (captain), Al Maseera Jahangir, Emily Thomas, Heena Hotchandani, Indhuja Nandakumar, Katie Thompson, Lavanya Keny, Mehak Thakur, Michelle Botha, Rinitha Rajith, Samaira Dharnidharka, Siya Gokhale, Sashikala Silva, Suraksha Kotte, Theertha Satish (wicketkeeper) Udeni Kuruppuarachchige, Vaishnave Mahesh.
UAE tour of Zimbabwe
All matches in Bulawayo
Friday, Sept 26 – First ODI
Sunday, Sept 28 – Second ODI
Tuesday, Sept 30 – Third ODI
Thursday, Oct 2 – Fourth ODI
Sunday, Oct 5 – First T20I
Monday, Oct 6 – Second T20I
Points Classification after Stage 1
1. Geraint Thomas (Britain / Team Sky) 20
2. Stefan Kueng (Switzerland / BMC Racing) 17
3. Vasil Kiryienka (Belarus / Team Sky) 15
4. Tony Martin (Germany / Katusha) 13
5. Matteo Trentin (Italy / Quick-Step) 11
6. Chris Froome (Britain / Team Sky) 10
7. Jos van Emden (Netherlands / LottoNL) 9
8. Michal Kwiatkowski (Poland / Team Sky) 8
9. Marcel Kittel (Germany / Quick-Step) 7
10. Edvald Boasson Hagen (Norway / Dimension Data) 6
New schools in Dubai
'The worst thing you can eat'
Trans fat is typically found in fried and baked goods, but you may be consuming more than you think.
Powdered coffee creamer, microwave popcorn and virtually anything processed with a crust is likely to contain it, as this guide from Mayo Clinic outlines:
Baked goods - Most cakes, cookies, pie crusts and crackers contain shortening, which is usually made from partially hydrogenated vegetable oil. Ready-made frosting is another source of trans fat.
Snacks - Potato, corn and tortilla chips often contain trans fat. And while popcorn can be a healthy snack, many types of packaged or microwave popcorn use trans fat to help cook or flavour the popcorn.
Fried food - Foods that require deep frying — french fries, doughnuts and fried chicken — can contain trans fat from the oil used in the cooking process.
Refrigerator dough - Products such as canned biscuits and cinnamon rolls often contain trans fat, as do frozen pizza crusts.
Creamer and margarine - Nondairy coffee creamer and stick margarines also may contain partially hydrogenated vegetable oils.
VEZEETA PROFILE
Date started: 2012
Founder: Amir Barsoum
Based: Dubai, UAE
Sector: HealthTech / MedTech
Size: 300 employees
Funding: $22.6 million (as of September 2018)
Investors: Technology Development Fund, Silicon Badia, Beco Capital, Vostok New Ventures, Endeavour Catalyst, Crescent Enterprises’ CE-Ventures, Saudi Technology Ventures and IFC
THE LOWDOWN
Photograph
Rating: 4/5
Produced by: Poetic License Motion Pictures; RSVP Movies
Director: Ritesh Batra
Cast: Nawazuddin Siddiqui, Sanya Malhotra, Farrukh Jaffar, Deepak Chauhan, Vijay Raaz
UAE WARRIORS RESULTS
Featherweight
Azouz Anwar (EGY) beat Marcelo Pontes (BRA)
TKO round 2
Catchweight 90kg
Moustafa Rashid Nada (KSA) beat Imad Al Howayeck (LEB)
Split points decision
Welterweight
Gimbat Ismailov (RUS) beat Mohammed Al Khatib (JOR)
TKO round 1
Flyweight (women)
Lucie Bertaud (FRA) beat Kelig Pinson (BEL)
Unanimous points decision
Lightweight
Alexandru Chitoran (ROU) beat Regelo Enumerables Jr (PHI)
TKO round 1
Catchweight 100kg
Marc Vleiger (NED) beat Mohamed Ali (EGY)
Rear neck choke round 1
Featherweight
James Bishop (NZ) beat Mark Valerio (PHI)
TKO round 2
Welterweight
Abdelghani Saber (EGY) beat Gerson Carvalho (BRA)
TKO round 1
Middleweight
Bakhtiyar Abbasov (AZE) beat Igor Litoshik (BLR)
Unanimous points decision
Bantamweight
Fabio Mello (BRA) beat Mark Alcoba (PHI)
Unanimous points decision
Welterweight
Ahmed Labban (LEB) v Magomedsultan Magomedsultanov (RUS)
TKO round 1
Bantamweight
Trent Girdham (AUS) beat Jayson Margallo (PHI)
TKO round 3
Lightweight
Usman Nurmagomedov (RUS) beat Roman Golovinov (UKR)
TKO round 1
Middleweight
Tarek Suleiman (SYR) beat Steve Kennedy (AUS)
Submission round 2
Lightweight
Dan Moret (USA) v Anton Kuivanen (FIN)
TKO round 2
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The 12 Syrian entities delisted by UK
Ministry of Interior
Ministry of Defence
General Intelligence Directorate
Air Force Intelligence Agency
Political Security Directorate
Syrian National Security Bureau
Military Intelligence Directorate
Army Supply Bureau
General Organisation of Radio and TV
Al Watan newspaper
Cham Press TV
Sama TV
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What can you do?
Document everything immediately; including dates, times, locations and witnesses
Seek professional advice from a legal expert
You can report an incident to HR or an immediate supervisor
You can use the Ministry of Human Resources and Emiratisation’s dedicated hotline
In criminal cases, you can contact the police for additional support
Wonka
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RESULTS
Lightweight (female)
Sara El Bakkali bt Anisha Kadka
Bantamweight
Mohammed Adil Al Debi bt Moaz Abdelgawad
Welterweight
Amir Boureslan bt Mahmoud Zanouny
Featherweight
Mohammed Al Katheeri bt Abrorbek Madaminbekov
Super featherweight
Ibrahem Bilal bt Emad Arafa
Middleweight
Ahmed Abdolaziz bt Imad Essassi
Bantamweight (female)
Ilham Bourakkadi bt Milena Martinou
Welterweight
Mohamed Mardi bt Noureddine El Agouti
Middleweight
Nabil Ouach bt Ymad Atrous
Welterweight
Nouredine Samir bt Marlon Ribeiro
Super welterweight
Brad Stanton bt Mohamed El Boukhari
The years Ramadan fell in May
NO OTHER LAND
Director: Basel Adra, Yuval Abraham, Rachel Szor, Hamdan Ballal
Stars: Basel Adra, Yuval Abraham
Rating: 3.5/5
Paatal Lok season two
Directors: Avinash Arun, Prosit Roy
Stars: Jaideep Ahlawat, Ishwak Singh, Lc Sekhose, Merenla Imsong
Rating: 4.5/5