Christchurch shootings: How mass killings have changed gun laws Image copyright Reuters New Zealand's Prime Minister Jacinda Ardern is poised to announce details of gun law reforms following last Friday's mass shooting at two mosques.
Not every country reacts to mass shootings by changing the law. But there have been some notable examples where tragedies have led to a complete overhaul of legislation.
AustraliaIn 1996, 35 people were killed with illegally-owned guns around the historic site of Port Arthur in Tasmania.
The Australian government reacted by requiring states to ban all semi-automatic and self-loading weapons, and restricted certain other types of handgun.
It also introduced a comprehensive registration and licensing system and made the requirements for owning a gun tougher. A mandatory buyback scheme resulted in at least 600,000 guns being handed over to the authorities.
In the two decades before the law changed, there were 13 mass shootings.
In the more than ..
Christchurch shootings: The rising new threat of alt-right violence Image copyright Getty Images Image caption The suspect flashed a hand sign as he appeared in court on Saturday charged with murder The man accused of the Christchurch shootings left a trail of references to online culture and extremist alt-right ideology.
When he first appeared in court, Brenton Tarrant flashed an "OK" hand sign.
The gesture was described in some accounts as a white nationalist symbol, but perhaps more accurately could be called a trollish gesture. It is used by extremists, but also by a range of conservatives, far-right figures and the alt-right - a disparate group of activists who congregate on extreme message boards.
A document posted shortly before the shooting and widely credited to the suspect, indicates the author is steeped in the alt-right's toxic culture.
Online, white nationalist ideology hides under layers of irony, often allowing its proponents to duck accusations of extremism while..
Armando, the 'Lewis Hamilton of pigeons' sells for record €1.25m Image copyright Pipa Image caption Armando, pictured, is now enjoying his retirement A champion pigeon has been sold for a record €1.25m ($1.42m; £1.07m).
Auction house Pipa called Armando the "best Belgian long-distance pigeon of all time". He's also been dubbed the "Lewis Hamilton of pigeons".
Before this sale, the record was €376,000 (£321,800). However, Pipa says this was beaten within a day of Armando being put up for bids.
The champ, who turns five this year, is now enjoying his retirement and has already fathered a number of chicks.
"It was unreal, the feeling - it was something out of this world," Nikolaas Gyselbrecht, the CEO of Pipa - short for "Pigeon Paradise" - told the BBC of the moment someone put down a bid of more than €1m.
"In our wildest dreams, we had never hoped for a price like that. We hoped for around €400,000 to €500,000, and we only dreamed of €600,000."
Image copyright Pipa Im..
Christchurch shootings: Erdogan criticised for showing NZ video Image copyright AFP Image caption President Erdogan is trying to galvanise support ahead of local elections this month Turkey's President Recep Tayyip Erdogan has been criticised for showing some of the New Zealand mosque gunman's video to bolster support at election rallies.
Mr Erdogan said part of gun suspect Brenton Tarrant's manifesto was to keep Turks from Europe.
New Zealand Foreign Minister Winston Peters told Turkish officials showing the video was "unfair" and endangered his country's citizens abroad.
Friday's attack on two mosques in Christchurch left 50 people dead.
The attacker live-streamed video of the killings and it was widely shared and downloaded as social media firms raced to take the footage down.
Social sites struggle to contain attack video Who are the victims? In New Zealand the footage has been classified as an objectionable publication and it is an offence to distribute or..
Dead Philippines whale had 40kg of plastic in stomach Image copyright Getty Images Image caption Plastic pollution in the world's oceans is a growing problem A dead whale that washed up in the Philippines had 40kg (88lbs) of plastic bags inside its stomach, researchers have said.
Workers at D'Bone Collector Museum recovered the Cuvier's beaked whale east of Davao City earlier in March.
In a Facebook post, the museum said the animal was filled with "the most plastic we have ever seen in a whale".
There were 16 rice sacks in its stomach, as well as "multiple shopping bags".
Ocean plastic a 'planetary crisis' - UN Plastic pollution: Images of a global problem Seven charts that explain the plastic pollution problem The museum will post a full list of the items found in the whale over the next few days.
Image Copyright D' Bone Collector Museum Inc. D' Bone Collector Museum Inc. Report Image Copyright D' Bone Collector Museum Inc. D' Bone Col..
Christchurch shootings: What are New Zealand's gun laws? Image copyright EPA A mass shooting at two mosques in Christchurch, New Zealand, has re-opened the national debate about firearms laws.
Former New Zealand Prime Minister Helen Clark told the BBC that she would be surprised if parliament did not now legislate for stricter gun control.
She said: "Questions are now being asked….how could they have amassed the guns?"
In 2016 New Zealand Police estimated that there were 1.2 million legal firearms owned by civilians - that equates to around one for every four people.
So how are they regulated?
Gun laws The minimum legal age to own a gun in New Zealand is 16, or 18 for military-style semi-automatic weapons. Anyone over those ages who is considered by police to be "fit and proper" can possess a firearm.
All gun-owners must have a licence, but most individual weapons don't have to be registered. New Zealand is one of the few countries where this is the case.
In order to own a g..
Christchurch shootings: How the attacks unfolded Image copyright EPA, Getty Images, Reuters Fifty people have been killed and another 50 wounded in shootings at two mosques in Christchurch, New Zealand, in the deadliest attack in the country's history.
New Zealand Prime Minister Jacinda Ardern called it one of New Zealand's "darkest days".
Here's what we know so far about how the attacks unfolded.
The first shooting took place at the Al Noor mosque, in central Christchurch.
A gunman using the name Brenton Tarrant live-streamed footage of his rampage to Facebook, filmed with a head-mounted camera.
Footage showed the man, armed with semi-automatic weapons, firing indiscriminately at men, women and children from close range inside the mosque.
The attacker's headcam footage begins in an industrial estate on Leslie Hills Drive, just west of Al Noor mosque.
It shows him driving south on to Mandeville Street and Blenheim Road towards the city centre before turning north ..
Christchurch shootings: Social media races to stop attack footage Media playback is unsupported on your device Media captionChristchurch was put into lockdown as events unfolded A gunman opened fire in a mosque in Christchurch, New Zealand, killing 50 people and injuring 50 more. As he did so, he filmed the entire crime and live-streamed it directly to Facebook.
What ensued was an exhausting race for social media pages to take the footage down, as it was replicated seemingly endlessly and shared widely in the wake of the attack.
And through social media, it found its way onto the front pages of some of the world's biggest news websites in the form of still images, gifs, and even the full video.
This series of events has, once again, shone a spotlight on how sites like Twitter, Facebook, YouTube and Reddit try - and fail - to address far-right extremism on their platforms.
Attacks mapped What is known about the suspects? As the video continued to spread, other members of the publi..
New Zealand mosque shooting: What is known about the suspect? Image copyright AFP/Getty Image caption Police officers stand guard near the scene of the deadly shooting in New Zealand The Christchurch mosque attacks were live-streamed on the internet by a man posting online under the name Brenton Tarrant. He said he was Australian.
Distressing footage shows him firing indiscriminately at men, women and children at close range inside the Al Noor mosque.
The individual had previously posted a rambling and expletive-filled document, espousing violent right-wing ideology.
Reaction to the attacksA day later, the 28 year old appeared in court in Christchurch, charged with murder.
Prime Minister Jacinda Ardern said the suspect had "travelled around the world with sporadic periods of time spent in New Zealand" and that he was currently living in Dunedin, south of Christchurch.
"I would not describe him as a long-term resident," she said
"The offender was in possession of a gun licence. I'..