Orange turns purple: Australian scientists solve fruit mystery Image copyright Neti Moffitt Image caption The fruit changed colour within hours of being cut up with a knife What could cause a freshly sliced orange to suddenly turn purple?
Australian health authorities say they have solved a mystery that prompted much speculation earlier this month.
It began when a Brisbane woman, Neti Moffitt, asked for an investigation into why an orange - partially eaten by her son - had later changed colour.
Scientists have now revealed it was due to a natural reaction between the fruit and a sharpened knife. The orange did not pose a health risk, they added.
Stewart Carswell, Queensland Health's chief chemist, said "numerous tests" were conducted to determine the cause of the colour change.
The results revealed that anthocyanins - a naturally occurring antioxidant in oranges - had reacted with iron particles from the newly sharpened blade, he said.
Image copyright Neti Moffitt Image caption..
Why Sweden and China have fallen out so badly Image copyright SVT Image caption Satirical programme Swedish News did a segment on Chinese tourists in last week's episode It's a diplomatic spat no one saw coming, but tensions have over the past few weeks been escalating between China and Sweden.
It all started earlier in September when Chinese tourists were removed from a hotel by Swedish police, a move which was heavily condemned by the Chinese government.
But matters were made worse when a satirical Swedish television show joked about Chinese people eating dogs and defecating in public.
Beijing accused the show of using "vulgar language", adding that it was "full of discrimination, prejudice and provocation" against China.
The Swedish broadcaster, on the other hand, said it would be "apparent" to a Swedish speaker that the show was "comedy".
But how did both countries get here and could there be more to the feud than it seems?
How did this all this begin?Earlier this month..
Aadhaar: India top court upholds world's largest biometric scheme Image copyright Getty Images Image caption Indians will need the identity number to receive benefits from more than 500 welfare schemes India's Supreme Court has ruled that the country's controversial biometric identity scheme is constitutional and does not violate the right to privacy.
However the court limited the scope of the Aadhaar scheme, saying it could not be compulsory for bank accounts, mobile connections or school admissions.
The world's largest biometric ID database covers welfare and tax payments and access to social services.
More than a billion Indians have already been enrolled.
They received a unique 12-digit identification number after submitting their fingerprints and retina scans. About 30 petitioners went to court to argue that the scheme infringed Indians' privacy.
What did the judges say?"Aadhaar gives dignity to the marginalised. Dignity to the marginalised outweighs priv..
Mike Hall: UK cyclist died instantly in race collision, inquest told Image copyright Gene Kehoe Image caption Mike Hall was fatally struck by a car during a road race in Australia Briton Mike Hall, one of the world's best ultra-endurance cyclists, died almost instantly when he was hit by a car during a race in Australia last year, an inquest has heard.
Mr Hall, 35, had been competing in the Indian Pacific Wheel Race when he was struck on a highway near Canberra.
An inquest has heard evidence that it was dark at the time and would have been hard for a motorist to see.
Driver Shegu Bobb, 19, thought he had hit a kangaroo, the hearing was told.
Mr Hall, from Harrogate, North Yorkshire, suffered major head, spinal and abdominal injuries, the Coroner's Court in the Australian Capital Territory heard.
He had been in second place when he was hit by Mr Bobb's car at 06.22 local time on 31 March last year. The vehicle was travelling at 100km/h (62 mph).
The coast-to-coast race -..
New Zealand PM Jacinda Ardern's baby premieres among world leaders Image copyright Reuters Image caption This is newborn Neve's first international trip since being born on 21 June New Zealand Prime Minister Jacinda Ardern has made her debut speech at the UN in New York - and in another first for the organisation she brought her baby along too.
Ms Ardern played with daughter Neve Te Aroha on Monday, shortly before addressing the UN's General Assembly.
Her partner Clarke Gayford, Neve's primary carer, held New Zealand's "first baby" while she spoke.
Mr Ardern is only the second elected leader to give birth while in office.
She made her debut speech at the Nelson Mandela Peace Summit, where she highlighted the former South African leader's "profound impact" on her country.
New Zealand PM defends $50,000 flight Ardern and Bhutto: Two different pregnancies in power The New Zealand premier is currently breastfeeding three-month-old Neve, meaning "it was a very..
Reality Check: The worst place to be stranded at sea? Image copyright Getty Images Indian yachtsman Abhilash Tomy has been rescued after his boat was severely damaged nearly 2,000 miles (3,200km) off the coast of Western Australia. Is there any worse place to get stranded?
The southern Indian Ocean is vast and largely free of humans. Abhilash Tomy got a reminder of this when his boat, the Thuriya, had its mast damaged during a storm last Friday.
The organisers of the Golden Globe solo round-the-world race, in which he was competing, said Mr Tomy had been stranded 1,900 miles off Australia - "the extreme limit of immediate rescue range".
The Australian Maritime Safety Authority, which co-ordinated the effort to bring back Mr Tomy, called it "one of the most remote areas on the planet, almost equidistant from any of the search-and-rescue facilities".
Injured Indian sailor rescued by French vessel How to survive for 10 hours in the water The place furthest from land But French fishing bo..
Inskip Point: Section of Australian beach collapses into sea Image copyright RAINBOW BEACH HELICOPTERS Image caption The "near-shore landslip" swallowed part of a small Queensland peninsula A large section of an Australian beach has fallen suddenly into the ocean due to erosion, according to authorities.
The landslip, up to 300m (1,000 feet) wide, took place at Inskip Point in Queensland on Sunday or Monday, state officials said.
It is the third incident of its kind in the area in recent years. In 2015, one swallowed a caravan, tents and a car.
Officials said no campers or property had been affected by the latest event. They urged people to avoid the area.
"It's likely this erosion has been caused by the undermining of part of the shoreline by tidal flow, waves and currents," Queensland's Department of Environment and Science said in a statement.
Helicopter pilot Glen Cruickshank said he saw the change while flying over the popular sand peninsula, about 250km (155 miles) nor..
Is this one of the world's most beautiful airports? Image copyright Rajiv Srivastava India's 100th airport, inaugurated by Prime Minister Narendra Modi in the northern-eastern state of Sikkim on Monday, is arguably one of the world's most beautiful.
Sikkim, a tiny former kingdom in the Himalayas, is home to Kanchenjunga, the world's third-highest mountain. The state is connected to Tibet, Bhutan and Nepal through eight mountain passes.
The state's first airport at Pakyong, some 30km (18 miles) from the state capital, Gangtok, and carved out of a mountainside has been described as an "engineering marvel".
Image copyright Rajiv Srivastava Some 60km from the border with China, the airport is located on top of a hill above Pakyong village at 4,500ft (1,371 metres) above sea level and it's spread across over 201 acres.
Image copyright Rajiv Srivastava The airport is flanked by deep valleys at both ends of the 1.75km-long runway. It has two parking bays and ..
Donald Trump expects second summit with Kim Jong-un 'soon' Image copyright Reuters Image caption Mr Trump made the remarks speaking to reporters at the UN headquarters US President Donald Trump says he expects a second summit with North Korean leader Kim Jong-un "quite soon".
Speaking to reporters at the UN headquarters in New York, Mr Trump said Secretary of State Mike Pompeo would arrange it "in the immediate future".
The president also said he saw "tremendous progress" in recent efforts to ease tension between the countries.
Just a year ago, the two nations were publicly speaking of a nuclear confrontation.
"That was a very dangerous time," the president said. "This is one year later, a much different time."
Mr Trump said Mr Kim had asked for a second summit through what he described as a "very warm" and "beautiful" personal letter.
Kim 'warmly' invites Trump for new summitThis echoes comments made by South Korean President Moon Jae-in.
Mr Moon recently compl..