A new study indicates that conditions on Mars nearly four billion years ago made life on the Red Planet more likely than previously thought.
The paper, published in Nature Geoscience on Monday, dispels the commonly held view that Mars was warm and wet, and once featured rivers, rainfall and oceans. It shows that a large number of the valley networks on the planet's surface were carved by water melting beneath glacial ice, not by free-flowing rivers as has previously been believed.
Researchers developed and used new techniques to examine more than 10,000 Martian valleys, using an algorithm to infer their underlying erosion processes.
Climate modelling predicts that Mars' ancient climate was much cooler
The paper’s lead author, Dr Anna Grau Galofre, former PhD student in the department of earth, ocean and atmospheric sciences at the University of British Columbia, said the findings of the study helped explain how the valleys would have formed 3.8 billion years ago on a planet that is farther from the sun than Earth, at a time when the sun’s heat was less intense.
"Climate modelling predicts that Mars' ancient climate was much cooler during the time of valley network formation," said Dr Grau Galofre.
The authors say that these environments would also have supported better survival conditions for possible ancient life on Mars. A sheet of ice would lend more protection and stability for underlying water, as well as providing shelter from solar radiation in the absence of a magnetic field - something that Mars once did have but which disappeared billions of years ago.
"For the last 40 years, since Mars's valleys were first discovered, the assumption was that rivers once flowed on Mars, eroding and originating all of these valleys," Dr Grau Galofre said.
"But there are hundreds of valleys on Mars, and they look very different from each other. If you look at Earth from a satellite, you see a lot of valleys: some of them made by rivers, some made by glaciers, some made by other processes, and each type has a distinctive shape. Mars is similar, in that valleys look very different from each other, suggesting that many processes were at play to carve them."
Co-author Mark Jellinek, professor in the University of British Columbia’s department of earth, ocean and atmospheric sciences, said the results provided the first evidence of extensive subglacial erosion driven by channelised meltwater drainage beneath an ancient ice sheet on Mars.
"The findings demonstrate that only a fraction of valley networks match patterns typical of surface water erosion, which is in marked contrast to the conventional view,” he said.
The scientists found “striking similarities” between many Martian valleys and those in the Canadian Arctic Archipelago after comparing their subglacial channels.
"Devon Island [in Canada] is one of the best analogues we have for Mars here on Earth - it is a cold, dry, polar desert, and the glaciation is largely cold-based," another co-author, Gordon Osinski, professor in Western University's department of earth sciences and Institute for Earth and Space Exploration, said.
Although the research is focused on Mars, scientists believe that the same techniques can be applied to uncover more about the early history of our own planet.
"Currently, we can reconstruct rigorously the history of global glaciation on Earth going back about a million to five million years," says Prof Jellinek. "Anna's work will enable us to explore the advance and retreat of ice sheets back to at least 35 million years ago - to the beginnings of Antarctica, or earlier - back in time well before the age of our oldest ice cores.”
The UAE made history on July 20, after it launched its first mission to Mars in efforts to study the dynamic weather conditions of the planet.
The team behind the project was invited to the palace and were honoured by Sheikh Mohamed and Sheikh Mohammed bin Rashid, Vice President and Ruler of Dubai.
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Cricket World Cup League Two
Teams
Oman, UAE, Namibia
Al Amerat, Muscat
Results
Oman beat UAE by five wickets
UAE beat Namibia by eight runs
Namibia beat Oman by 52 runs
UAE beat Namibia by eight wickets
Fixtures
Saturday January 11 - UAE v Oman
Sunday January 12 – Oman v Namibia
History's medical milestones
1799 - First small pox vaccine administered
1846 - First public demonstration of anaesthesia in surgery
1861 - Louis Pasteur published his germ theory which proved that bacteria caused diseases
1895 - Discovery of x-rays
1923 - Heart valve surgery performed successfully for first time
1928 - Alexander Fleming discovers penicillin
1953 - Structure of DNA discovered
1952 - First organ transplant - a kidney - takes place
1954 - Clinical trials of birth control pill
1979 - MRI, or magnetic resonance imaging, scanned used to diagnose illness and injury.
1998 - The first adult live-donor liver transplant is carried out
In numbers: PKK’s money network in Europe
Germany: PKK collectors typically bring in $18 million in cash a year – amount has trebled since 2010
Revolutionary tax: Investigators say about $2 million a year raised from ‘tax collection’ around Marseille
Extortion: Gunman convicted in 2023 of demanding $10,000 from Kurdish businessman in Stockholm
Drug trade: PKK income claimed by Turkish anti-drugs force in 2024 to be as high as $500 million a year
Denmark: PKK one of two terrorist groups along with Iranian separatists ASMLA to raise “two-digit million amounts”
Contributions: Hundreds of euros expected from typical Kurdish families and thousands from business owners
TV channel: Kurdish Roj TV accounts frozen and went bankrupt after Denmark fined it more than $1 million over PKK links in 2013
Rock in a Hard Place: Music and Mayhem in the Middle East
Orlando Crowcroft
Zed Books
UAE currency: the story behind the money in your pockets
The specs: 2018 Nissan 370Z Nismo
The specs: 2018 Nissan 370Z Nismo
Price, base / as tested: Dh182,178
Engine: 3.7-litre V6
Power: 350hp @ 7,400rpm
Torque: 374Nm @ 5,200rpm
Transmission: Seven-speed automatic
Fuel consumption, combined: 10.5L / 100km
More from Rashmee Roshan Lall
The specs: 2019 Mini Cooper
Price, base: Dh141,740 (three-door) / Dh165,900 (five-door)
Engine: 1.5-litre four-cylinder (Cooper) / 2.0-litre four-cylinder (Cooper S)
Power: 136hp @ 4,500rpm (Cooper) / 192hp @ 5,000rpm (Cooper S)
Torque: 220Nm @ 1,480rpm (Cooper) / 280Nm @ 1,350rpm (Cooper S)
Transmission: Seven-speed automatic
Fuel consumption, combined: 4.8L to 5.4L / 100km
What are NFTs?
Are non-fungible tokens a currency, asset, or a licensing instrument? Arnab Das, global market strategist EMEA at Invesco, says they are mix of all of three.
You can buy, hold and use NFTs just like US dollars and Bitcoins. “They can appreciate in value and even produce cash flows.”
However, while money is fungible, NFTs are not. “One Bitcoin, dollar, euro or dirham is largely indistinguishable from the next. Nothing ties a dollar bill to a particular owner, for example. Nor does it tie you to to any goods, services or assets you bought with that currency. In contrast, NFTs confer specific ownership,” Mr Das says.
This makes NFTs closer to a piece of intellectual property such as a work of art or licence, as you can claim royalties or profit by exchanging it at a higher value later, Mr Das says. “They could provide a sustainable income stream.”
This income will depend on future demand and use, which makes NFTs difficult to value. “However, there is a credible use case for many forms of intellectual property, notably art, songs, videos,” Mr Das says.
MATCH INFO
Southampton 0
Manchester City 1 (Sterling 16')
Man of the match: Kevin de Bruyne (Manchester City)
The 10 Questions
- Is there a God?
- How did it all begin?
- What is inside a black hole?
- Can we predict the future?
- Is time travel possible?
- Will we survive on Earth?
- Is there other intelligent life in the universe?
- Should we colonise space?
- Will artificial intelligence outsmart us?
- How do we shape the future?
T20 World Cup Qualifier, Muscat
UAE FIXTURES
Friday February 18: v Ireland
Saturday February 19: v Germany
Monday February 21: v Philippines
Tuesday February 22: semi-finals
Thursday February 24: final
Red Sparrow
Dir: Francis Lawrence
Starring: Jennifer Lawrence, Joel Egerton, Charlotte Rampling, Jeremy Irons
Three stars
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
England v South Africa Test series:
First Test: at Lord's, England won by 211 runs
Second Test: at Trent Bridge, South Africa won by 340 runs
Third Test: at The Oval, July 27-31
Fourth Test: at Old Trafford, August 4-8
Ten tax points to be aware of in 2026
1. Domestic VAT refund amendments: request your refund within five years
If a business does not apply for the refund on time, they lose their credit.
2. E-invoicing in the UAE
Businesses should continue preparing for the implementation of e-invoicing in the UAE, with 2026 a preparation and transition period ahead of phased mandatory adoption.
3. More tax audits
Tax authorities are increasingly using data already available across multiple filings to identify audit risks.
4. More beneficial VAT and excise tax penalty regime
Tax disputes are expected to become more frequent and more structured, with clearer administrative objection and appeal processes. The UAE has adopted a new penalty regime for VAT and excise disputes, which now mirrors the penalty regime for corporate tax.
5. Greater emphasis on statutory audit
There is a greater need for the accuracy of financial statements. The International Financial Reporting Standards standards need to be strictly adhered to and, as a result, the quality of the audits will need to increase.
6. Further transfer pricing enforcement
Transfer pricing enforcement, which refers to the practice of establishing prices for internal transactions between related entities, is expected to broaden in scope. The UAE will shortly open the possibility to negotiate advance pricing agreements, or essentially rulings for transfer pricing purposes.
7. Limited time periods for audits
Recent amendments also introduce a default five-year limitation period for tax audits and assessments, subject to specific statutory exceptions. While the standard audit and assessment period is five years, this may be extended to up to 15 years in cases involving fraud or tax evasion.
8. Pillar 2 implementation
Many multinational groups will begin to feel the practical effect of the Domestic Minimum Top-Up Tax (DMTT), the UAE's implementation of the OECD’s global minimum tax under Pillar 2. While the rules apply for financial years starting on or after January 1, 2025, it is 2026 that marks the transition to an operational phase.
9. Reduced compliance obligations for imported goods and services
Businesses that apply the reverse-charge mechanism for VAT purposes in the UAE may benefit from reduced compliance obligations.
10. Substance and CbC reporting focus
Tax authorities are expected to continue strengthening the enforcement of economic substance and Country-by-Country (CbC) reporting frameworks. In the UAE, these regimes are increasingly being used as risk-assessment tools, providing tax authorities with a comprehensive view of multinational groups’ global footprints and enabling them to assess whether profits are aligned with real economic activity.
Contributed by Thomas Vanhee and Hend Rashwan, Aurifer
NYBL PROFILE
Company name: Nybl
Date started: November 2018
Founder: Noor Alnahhas, Michael LeTan, Hafsa Yazdni, Sufyaan Abdul Haseeb, Waleed Rifaat, Mohammed Shono
Based: Dubai, UAE
Sector: Software Technology / Artificial Intelligence
Initial investment: $500,000
Funding round: Series B (raising $5m)
Partners/Incubators: Dubai Future Accelerators Cohort 4, Dubai Future Accelerators Cohort 6, AI Venture Labs Cohort 1, Microsoft Scale-up
Other simple ideas for sushi rice dishes
Cheat’s nigiri
This is easier to make than sushi rolls. With damp hands, form the cooled rice into small tablet shapes. Place slices of fresh, raw salmon, mackerel or trout (or smoked salmon) lightly touched with wasabi, then press, wasabi side-down, onto the rice. Serve with soy sauce and pickled ginger.
Easy omurice
This fusion dish combines Asian fried rice with a western omelette. To make, fry cooked and cooled sushi rice with chopped vegetables such as carrot and onion and lashings of sweet-tangy ketchup, then wrap in a soft egg omelette.
Deconstructed sushi salad platter
This makes a great, fuss-free sharing meal. Arrange sushi rice on a platter or board, then fill the space with all your favourite sushi ingredients (edamame beans, cooked prawns or tuna, tempura veggies, pickled ginger and chilli tofu), with a dressing or dipping sauce on the side.
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