Which is the longest river in the world? The Nile or the Amazon? The question has fuelled a heated debate for years. Now, an expedition into the South American jungle aims to settle it for good.
Using boats that run on solar energy and pedal power, an international team of explorers plan to set off next April to the source of the Amazon in the Peruvian Andes, then travel about 7,000kms across Colombia and Brazil, to the massive river's mouth in the Atlantic.
“The main objective is to map the river and document the biodiversity” of the surrounding ecosystems, said Brazilian explorer and project co-ordinator, Yuri Sanada.
The team also plans to make a documentary on the expedition.
Where does the Amazon River begin and end?
About 10 people are known to have travelled the full length of the Amazon, but none have done it with those objectives, said Sanada, who runs film production company Aventuras (Adventures) with his wife, Vera.
The Amazon, the pulsing aorta of the world's biggest rainforest, has long been recognised as the largest river in the world by volume, discharging more than the Nile, the Yangtze and the Mississippi combined.
But there is a decades-old geographical dispute over whether it is longer than the Nile, made murkier by methodological issues and a lack of consensus on a rather basic question – where does the Amazon start and end?
The Guinness Book of World Records awards the title to the African river. However, it adds in a note: “Which is the longer is more a matter of definition than simple measurement.”
The Encyclopedia Britannica gives the length of the Nile as 6,650km, and 6,400km for the Amazon, measuring the latter from the headwaters of the Apurimac river in southern Peru. In 2014, US neuroscientist and explorer James “Rocky” Contos developed an alternative theory, putting the source of the Amazon farther away, at the Mantaro river in northern Peru.
If accepted, it would mean the Amazon “is actually 77km longer than what geographers had thought previously”, said Contos, who will guide one group in Sanada's expedition, which will trace both the Apurimac and Mantaro sources.
The river less travelled
Contos's group will travel down the Mantaro by white-water rafting. The other will travel the banks of the Apurimac on horseback with French explorer Celine Cousteau, granddaughter of legendary oceanographer Jacques Cousteau.
At the point where the rivers converge, Sanada and two other explorers will embark on the longest leg of the journey, travelling in three custom-made, motorised canoes powered by solar panels and pedals, equipped with a sensor to measure distance.
“We'll be able to make a much more precise measurement,” Sanada said, adding the explorers plan to transfer the sustainable motor technology to local Indigenous groups.
The expedition is backed by international groups including The Explorers Club and the Harvard map collection.
The adventurers will traverse terrain inhabited by anacondas, alligators and jaguars, but none of that scares Sanada, who said: “I'm most afraid of drug traffickers and illegal miners.”
Each boat will be outfitted with a bulletproof cabin, and the team is negotiating with authorities to obtain an armed escort for the most dangerous zones.
If the expedition is successful, it may be replicated on the Nile.
Sanada said the debate on the world's longest river may never be settled, but he is glad the “race” is drawing attention to the Amazon rainforest's natural riches and the need to protect it as one of the planet's key buffers against climate change.
“The Amazon is [here], but the consequences of destroying it and the duty to preserve it are everyone's.”
The five pillars of Islam
AI traffic lights to ease congestion at seven points to Sheikh Zayed bin Sultan Street
The seven points are:
Shakhbout bin Sultan Street
Dhafeer Street
Hadbat Al Ghubainah Street (outbound)
Salama bint Butti Street
Al Dhafra Street
Rabdan Street
Umm Yifina Street exit (inbound)
More from Neighbourhood Watch
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
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Results
Ashraf Ghani 50.64 per cent
Abdullah Abdullah 39.52 per cent
Gulbuddin Hekmatyar 3.85 per cent
Rahmatullah Nabil 1.8 per cent
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More about Middle East geopolitics
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What are the GCSE grade equivalents?
- Grade 9 = above an A*
- Grade 8 = between grades A* and A
- Grade 7 = grade A
- Grade 6 = just above a grade B
- Grade 5 = between grades B and C
- Grade 4 = grade C
- Grade 3 = between grades D and E
- Grade 2 = between grades E and F
- Grade 1 = between grades F and G
RESULTS
2pm: Handicap (PA) Dh 40,000 (Dirt) 1,200m
Winner: AF Senad, Nathan Crosse (jockey), Kareem Ramadan (trainer)
2.30pm: Maiden (PA) Dh 40,000 (D) 1,000m
Winner: Ashjaan, Fabrice Veron, Eric Lemartinel.
3pm: Maiden (PA) Dh 40,000 (D) 1,700m
Winner: Amirah, Conner Beasley, Ali Rashid Al Raihe.
3.30pm: Handicap (PA) Dh 40,000 (D) 1,700m
Winner: Jap Al Yaasoob, Szczepan Mazur, Irfan Ellahi.
4pm: Sheikh Mansour bin Zayed Al Nahyan Cup Prestige Handicap (PA) Dh 100,000 (D) 1,200m
Winner: Jawaal, Fernando Jara, Majed Al Jahouri.
4.30pm: Handicap (TB) Dh 40,000 (D) 1,200m
Winner: Manhunter, Ryan Curatolo, Mujeeb Rahman.
SPEC%20SHEET
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RESULT
Huddersfield Town 1 Manchester City 2
Huddersfield: Otamendi (45' 1 og), van La Parra (red card 90' 6)
Man City: Agüero (47' pen), Sterling (84')
Man of the match: Christopher Schindler (Huddersfield Town)
MATCH INFO
Uefa Champions League semi-final, first leg
Barcelona v Liverpool, Wednesday, 11pm (UAE).
Second leg
Liverpool v Barcelona, Tuesday, May 7, 11pm
Games on BeIN Sports
MATCH INFO
Manchester United 1 (Rashford 36')
Liverpool 1 (Lallana 84')
Man of the match: Marcus Rashford (Manchester United)
ELIO
Starring: Yonas Kibreab, Zoe Saldana, Brad Garrett
Directors: Madeline Sharafian, Domee Shi, Adrian Molina
Rating: 4/5
The specs
Engine: 3.0-litre six-cylinder turbo
Power: 398hp from 5,250rpm
Torque: 580Nm at 1,900-4,800rpm
Transmission: Eight-speed auto
Fuel economy, combined: 6.5L/100km
On sale: December
Price: From Dh330,000 (estimate)
EA Sports FC 26
Publisher: EA Sports
Consoles: PC, PlayStation 4/5, Xbox Series X/S
Rating: 3/5
BMW M5 specs
Engine: 4.4-litre twin-turbo V-8 petrol enging with additional electric motor
Power: 727hp
Torque: 1,000Nm
Transmission: 8-speed auto
Fuel consumption: 10.6L/100km
On sale: Now
Price: From Dh650,000
Lexus LX700h specs
Engine: 3.4-litre twin-turbo V6 plus supplementary electric motor
Power: 464hp at 5,200rpm
Torque: 790Nm from 2,000-3,600rpm
Transmission: 10-speed auto
Fuel consumption: 11.7L/100km
On sale: Now
Price: From Dh590,000
Specs
Engine: Dual-motor all-wheel-drive electric
Range: Up to 610km
Power: 905hp
Torque: 985Nm
Price: From Dh439,000
Available: Now
Stree
Producer: Maddock Films, Jio Movies
Director: Amar Kaushik
Cast: Rajkummar Rao, Shraddha Kapoor, Pankaj Tripathi, Aparshakti Khurana, Abhishek Banerjee
Rating: 3.5
The specs
Engine: 4.0-litre flat-six
Torque: 450Nm at 6,100rpm
Transmission: 7-speed PDK auto or 6-speed manual
Fuel economy, combined: 13.8L/100km
On sale: Available to order now
In numbers: China in Dubai
The number of Chinese people living in Dubai: An estimated 200,000
Number of Chinese people in International City: Almost 50,000
Daily visitors to Dragon Mart in 2018/19: 120,000
Daily visitors to Dragon Mart in 2010: 20,000
Percentage increase in visitors in eight years: 500 per cent
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ACC 2019: The winners in full
Best Actress Maha Alemi, Sofia
Best Actor Mohamed Dhrif, Weldi
Best Screenplay Meryem Benm’Barek, Sofia
Best Documentary Of Fathers and Sons by Talal Derki
Best Film Yomeddine by Abu Bakr Shawky
Best Director Nadine Labaki, Capernaum
Day 1, Dubai Test: At a glance
Moment of the day Sadeera Samarawickrama set pulses racing with his strokeplay on his introduction to Test cricket. It reached a feverish peak when he stepped down the wicket and launched Yasir Shah, who many regard as the world’s leading spinner, back over his head for six. No matter that he was out soon after: it felt as though the future had arrived.
Stat of the day - 5 The last time Sri Lanka played a Test in Dubai – they won here in 2013 – they had four players in their XI who were known as wicketkeepers. This time they have gone one better. Each of Dinesh Chandimal, Kaushal Silva, Samarawickrama, Kusal Mendis, and Niroshan Dickwella – the nominated gloveman here – can keep wicket.
The verdict Sri Lanka want to make history by becoming the first team to beat Pakistan in a full Test series in the UAE. They could not have made a better start, first by winning the toss, then by scoring freely on an easy-paced pitch. The fact Yasir Shah found some turn on Day 1, too, will have interested their own spin bowlers.
Key Points
- Protests against President Omar Al Bashir enter their sixth day
- Reports of President Bashir's resignation and arrests of senior government officials
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if you go
The flights
Air Astana flies direct from Dubai to Almaty from Dh2,440 per person return, and to Astana (via Almaty) from Dh2,930 return, both including taxes.
The hotels
Rooms at the Ritz-Carlton Almaty cost from Dh1,944 per night including taxes; and in Astana the new Ritz-Carlton Astana (www.marriott) costs from Dh1,325; alternatively, the new St Regis Astana costs from Dh1,458 per night including taxes.
When to visit
March-May and September-November
Visas
Citizens of many countries, including the UAE do not need a visa to enter Kazakhstan for up to 30 days. Contact the nearest Kazakhstan embassy or consulate.
Tips for job-seekers
- Do not submit your application through the Easy Apply button on LinkedIn. Employers receive between 600 and 800 replies for each job advert on the platform. If you are the right fit for a job, connect to a relevant person in the company on LinkedIn and send them a direct message.
- Make sure you are an exact fit for the job advertised. If you are an HR manager with five years’ experience in retail and the job requires a similar candidate with five years’ experience in consumer, you should apply. But if you have no experience in HR, do not apply for the job.
David Mackenzie, founder of recruitment agency Mackenzie Jones Middle East
'Ashkal'
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BUNDESLIGA FIXTURES
Saturday, May 16 (kick-offs UAE time)
Borussia Dortmund v Schalke (4.30pm)
RB Leipzig v Freiburg (4.30pm)
Hoffenheim v Hertha Berlin (4.30pm)
Fortuna Dusseldorf v Paderborn (4.30pm)
Augsburg v Wolfsburg (4.30pm)
Eintracht Frankfurt v Borussia Monchengladbach (7.30pm)
Sunday, May 17
Cologne v Mainz (4.30pm),
Union Berlin v Bayern Munich (7pm)
Monday, May 18
Werder Bremen v Bayer Leverkusen (9.30pm)
The specs: 2018 Jeep Compass
Price, base: Dh100,000 (estimate)
Engine: 2.4L four-cylinder
Transmission: Nine-speed automatic
Power: 184bhp at 6,400rpm
Torque: 237Nm at 3,900rpm
Fuel economy, combined: 9.4L / 100km
Living in...
This article is part of a guide on where to live in the UAE. Our reporters will profile some of the country’s most desirable districts, provide an estimate of rental prices and introduce you to some of the residents who call each area home.
Our legal columnist
Name: Yousef Al Bahar
Advocate at Al Bahar & Associate Advocates and Legal Consultants, established in 1994
Education: Mr Al Bahar was born in 1979 and graduated in 2008 from the Judicial Institute. He took after his father, who was one of the first Emirati lawyers
Dust and sand storms compared
Sand storm
- Particle size: Larger, heavier sand grains
- Visibility: Often dramatic with thick "walls" of sand
- Duration: Short-lived, typically localised
- Travel distance: Limited
- Source: Open desert areas with strong winds
Dust storm
- Particle size: Much finer, lightweight particles
- Visibility: Hazy skies but less intense
- Duration: Can linger for days
- Travel distance: Long-range, up to thousands of kilometres
- Source: Can be carried from distant regions
UAE currency: the story behind the money in your pockets
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Saturday's schedule at the Abu Dhabi Grand Prix
GP3 race, 12:30pm
Formula 1 final practice, 2pm
Formula 1 qualifying, 5pm
Formula 2 race, 6:40pm
Performance: Sam Smith
Our family matters legal consultant
Name: Hassan Mohsen Elhais
Position: legal consultant with Al Rowaad Advocates and Legal Consultants.
Why it pays to compare
A comparison of sending Dh20,000 from the UAE using two different routes at the same time - the first direct from a UAE bank to a bank in Germany, and the second from the same UAE bank via an online platform to Germany - found key differences in cost and speed. The transfers were both initiated on January 30.
Route 1: bank transfer
The UAE bank charged Dh152.25 for the Dh20,000 transfer. On top of that, their exchange rate margin added a difference of around Dh415, compared with the mid-market rate.
Total cost: Dh567.25 - around 2.9 per cent of the total amount
Total received: €4,670.30
Route 2: online platform
The UAE bank’s charge for sending Dh20,000 to a UK dirham-denominated account was Dh2.10. The exchange rate margin cost was Dh60, plus a Dh12 fee.
Total cost: Dh74.10, around 0.4 per cent of the transaction
Total received: €4,756
The UAE bank transfer was far quicker – around two to three working days, while the online platform took around four to five days, but was considerably cheaper. In the online platform transfer, the funds were also exposed to currency risk during the period it took for them to arrive.
ABU DHABI T10: DAY TWO
Bangla Tigers v Deccan Gladiators (3.30pm)
Delhi Bulls v Karnataka Tuskers (5.45pm)
Northern Warriors v Qalandars (8.00pm)
