Australia's prime minister has promised to take strong action following an apparent arson attack on a synagogue in Melbourne.

Police are looking for a man who poured liquid on the synagogue's front door before setting it on fire on Friday night. Some 20 people having dinner inside at the time were evacuated without any injuries.

Police are also trying to determine if the incident is linked to an attack against a Jewish-owned restaurant in the city on the same night.

A string of antisemitic attacks have occurred in Australia in the past few months, sparked by tensions over the Israel-Hamas war.

The Australian government has appointed a special envoy to combat antisemitism, and passed tougher laws against hate crimes following a wave of high-profile attacks.

"Antisemitism has no place in Australia," Prime Minister Anthony Albanese said following the attack on the East Melbourne synagogue.

"Those responsible for these shocking acts must face the full force of the law and my government will provide all necessary support toward this effort," Albanese said.

It is not clear if the incident was linked to the attack on the Miznon restaurant in the city's business district during which rioters broke in, throwing chairs and other objects while chanting "death to the IDF [Israel Defense Forces]". Some of the attackers were led away in handcuffs.

"These events are a severe escalation directed towards our community," said Alex Ryvchin, co-chief executive of the Executive Council of Australian Jewry.

"There have been too many antisemitic attacks in Australia," Israel's Foreign Minister Gideon Saar said.

"The Australian government must do more to fight this toxic disease."

The ongoing conflict in the Middle East has become a volatile political issue in Australia.

It has resulted in protests from both Jewish and Muslim communities, as well as a sharp uptick in Islamophobia and antisemitism.

The Israeli military launched a campaign in Gaza in response to the 7 October 2023 attack, in which about 1,200 people were killed and 251 others were taken hostage.

At least 57,268 people have been killed in Gaza since then, according to the territory's health ministry.

A tiny, obscure animal often sold as aquarium food has been quietly protecting our planet from global warming by undertaking an epic migration, according to new research.

These "unsung heroes" called zooplankton gorge themselves and grow fat in spring before sinking hundreds of metres into the deep ocean in Antarctica where they burn the fat.

This locks away as much planet-warming carbon as the annual emissions of roughly 55 million petrol cars, stopping it from further warming our atmosphere, according to researchers.

This is much more than scientists expected. But just as researchers uncover this service to our planet, threats to the zooplankton are growing.

Scientists have spent years probing the animal's annual migration in Antarctic waters, or the Southern Ocean, and what it means for climate change.

The findings are "remarkable", says lead author Dr Guang Yang from the Chinese Academy of Sciences, adding that it forces a re-think about how much carbon the Southern Ocean stores.

"The animals are an unsung hero because they have such a cool way of life," says co-author Dr Jennifer Freer from British Antarctic Survey.

But compared to the most popular Antarctic animals like the whale or penguin, the small but mighty zooplankton are overlooked and under-appreciated.

If anyone has heard of them, it's probably as a type of fish food available to buy online.

But their life cycle is odd and fascinating. Take the copepod, a type of zooplankton that is a distant relative of crabs and lobsters.

Just 1-10mm in size, they spend most of their lives asleep between 500m to 2km deep in the ocean.

In pictures taken under a microscope, you can see long sausages of fat inside their bodies, and fat bubbles in their heads, explains Prof Daniel Mayor who photographed them in Antarctica.

Without them, our planet's atmosphere would be significantly warmer.

Globally the oceans have absorbed 90% of the excess heat humans have created by burning fossil fuels. Of that figure, the Southern Ocean is responsible for about 40%, and a lot of that is down to zooplankton.

Millions of pounds is being spent globally to understand how exactly they store carbon.

Scientists were already aware that the zooplankton contributed to carbon storage in a daily process when the animals carbon-rich waste sinks to the deep ocean.

But what happened when the animals migrate in the Southern Ocean had not been quantified.

The latest research focussed on copepods, as well as other types of zooplankton called krill, and salps.

The creatures eat phytoplankton on the ocean surface which grow by transforming carbon dioxide into living matter through photosynthesis. This turns into fat in the zooplankton.

"Their fat is like a battery pack. When they spend the winter deep in the ocean, they just sit and slowly burn off this fat or carbon," explains Prof Daniel Mayor at University of Exeter, who was not part of the study.

"This releases carbon dioxide. Because of the way the oceans work, if you put carbon really deep down, it takes decades or even centuries for that CO2 to come out and contribute to atmospheric warming," he says.

The research team calculated that this process - called the seasonal vertical migration pump - transports 65 million tonnes of carbon annually to at least 500m below the ocean surface.

Of that, it found that copepods contribute the most, followed by krill and salps.

That is roughly equivalent to the emissions from driving 55 million diesel cars for a year, according to a greenhouse gas emissions calculator by the US EPA.

The latest research looked at data stretching back to the 1920s to quantify this carbon storage, also called carbon sequestration.

But the scientific discovery is ongoing as researchers seek to understand more details about the migration cycle.

Earlier this year, Dr Freer and Prof Mayor spent two months on the Sir David Attenborough polar research ship near the South Orkney island and South Georgia.

Using large nets the scientists caught zooplankton and brought the animals onboard.

"We worked in complete darkness under red light so we didn't disturb them," says Dr Freer.

"Others worked in rooms kept at 3-4C. You wear a lot of protection to stay there for hours at a time looking down the microscope," she adds.

But warming waters as well as commercial harvesting of krill could threaten the future of zooplankton.

"Climate change, disturbance to ocean layers and extreme weather are all threats," explains Prof Atkinson.

This could reduce the amount of zooplankton in Antarctica and limit the carbon stored in the deep ocean.

Krill fishing companies harvested almost half a million tonnes of krill in 2020, according to the UN.

It is permitted under international law, but has been criticised by environmental campaigners including in the recent David Attenborough Ocean documentary.

The scientists say their new findings should be incorporated into climate models that forecast how much our planet will warm.

"If this biological pump didn't exist, atmospheric CO2 levels would be roughly twice those as they are at the moment. So the oceans are doing a pretty good job of mopping up CO2 and getting rid of it," explains co-author Prof Angus Atkinson.

The research is published in the journal Limnology and Oceanography.

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In late 2023, sisters Lisa and Nicole were told they had inherited a substantial sum from their late Aunt Christine. But while they were absorbing this life-changing news, the windfall was just as quickly snatched away.

A man unknown to Christine's family, friends or neighbours, appeared - apparently from nowhere - and produced a will, naming him sole heir to her entire estate.

Doubts about the man's claim grew as troubling details emerged. However, the police and probate service said they would not investigate.

Lisa and Nicole's is one of several similar cases investigated by BBC News in the south of England.

We found mounting evidence that a criminal gang has been carrying out systematic will fraud by exploiting weaknesses in the probate system, stealing millions of pounds from the estates of dead people, and committing serious tax fraud.

'My dear friend'

Lisa and Nicole were upset to hear about the death of their aunt, Christine Harverson, whom they had not seen since their early childhood. They were also shocked to be told that they stood to inherit her entire estate, including a house in Wimbledon, south London, which could be worth nearly £1m. She had not left a will, and they were her closest living relatives.

The sisters were alerted to their inheritance by an "heir-finder" company, Anglia Research Services. Heir-finders use an official government register that lists estates where no will has been made. They research the dead person's family in order to identify, locate and contact the rightful heirs.

In return for a portion of the inheritance, these companies act on the heirs' behalf and apply for what's known as a grant of probate. This gives them the legal right to deal with a deceased person's estate – in other words, their property, money and possessions.

However, on this occasion, the application for probate on behalf of Lisa and Nicole was stopped in its tracks.

A Hungarian man by the name of Tamas Szvercsok contacted the probate service, and produced a will describing him as Christine's "dear friend".

It named him the beneficiary of her entire estate, as well as sole executor - the person legally responsible for carrying out the instructions in the will.

The possibility that Mr Szvercsok was genuine, initially was not dismissed out of hand.

"It happens - sometimes cases slip through the net and a will is unearthed," says Matt Boardman, a former police officer who works for Anglia Research.

However, there were clear signs something was amiss:

• Christine's neighbour and friend, Sue, said she had never mentioned a Hungarian friend at any point in the years they had known each other
• The will was dated 2016 - Christine was housebound and disabled by this time, and receiving practically no visitors
• The terms of the will meant that Christine would have disinherited her husband and carer Dennis, who in 2016 was still alive (he died in 2020)
• Moreover, because Dennis was the joint owner of their house, Christine could not have legally bequeathed the house without his consent
• After Dennis's death, Christine entered a care home, but there was no record of Mr Szvercsok ever visiting her

Other even more troubling details stood out.

Christine's home address was misspelled on the will, and even though it was dated 2016, the address given for Mr Szvercsok was a block of flats that had not been built until 2021.

Matt Boardman contacted Mr Szvercsok, who replied by email: "I never heard of any family. I'm the sole executor of her will."

Despite presenting what they thought was a strong case to police and the probate service, Lisa and Nicole were told they would have to bring a civil action if they wanted to prove that the will was a fake. That would cost tens of thousands of pounds which they do not have.

Lisa now says she sometimes wishes she had never been told about the will in the first place: "All it's done is bring misery really, and heartache. It's just a whole nightmare."

'Vacant goods'

Stealing a dead person's property and financial assets appears to be extremely easy under UK law, if no will can be located.

The official government register of unclaimed estates in England and Wales is called Bona Vacantia (Latin for "vacant goods"), and is freely accessible online. It currently contains about 6,000 names and is updated daily.

Legitimate heir-hunting companies use Bona Vacantia to research potential clients, but it also appears to have become a valuable resource for criminals.

To claim an estate where there is no known heir, a fraudster simply has to find a promising name on Bona Vacantia, produce a will quickly enough, and be awarded grant of probate.

Since 2017 it's been possible to apply for grant of probate online, but critics of the system say it is failing to detect suspicious applicants, and it also appears to increase the opportunity for tax fraud.

When someone dies, their estate has to be assessed for inheritance tax. This is not payable on estates worth £325,000 or less, but any amount over that threshold – with some exceptions - is taxed at 40%.

It's the responsibility of the person awarded grant of probate to make sure inheritance tax has been paid.

Applicants for grant of probate must complete a form to say this has been done, but under the current arrangements, they need do no more than declare on the online form that no tax is due.

It is a system that relies largely on trust, but gives ample opportunity for that trust to be roundly abused.

During our investigations we have come across cases where estates have been valued at just under the inheritance tax threshold, even though they include property worth far more.

One of these was the estate of Charles Haxton.

Whose house?

At the time of his death in 2021, Charles Haxton was living alone in a terraced house in Tooting, south London.

He was reclusive and only occasionally spoke to neighbours, although one of them, Roye Chapman, was there for him near the end when he suffered a bad fall outside.

"I rang the police and then got him up and got him into the ambulance," he says. "His head was all cut open, and then two weeks later, he died."

No will was initially found for Mr Haxton, and his name and address appeared on Bona Vacantia. This prompted Anglia Research to look for possible heirs, and they told several of his cousins that they could be in line to inherit Mr Haxton's estate.

Then, as with Lisa and Nicole, the cousins were told that a will had appeared after all, leaving everything to one man - also Hungarian - called Roland Silye.

The family initially accepted his claim, to have been an old friend of Mr Haxton, but one relation, Barry, obtained a copy of the will and was struck by how odd it looked.

It left Mr Silye two properties - not only Mr Haxton's home in London, but also a house in Hertfordshire.

Together, the two properties would have been worth about £2m. However, Mr Silye listed the value of the estate as £320,500 – just £4,500 short of the amount at which inheritance tax kicked in.

What was even stranger was that Mr Haxton had never owned, and had no connection to, any house in Hertfordshire.

We visited this property. It was large and dilapidated, and neighbours told us it had been unoccupied for a long time.

The puzzle of the extra house also caught the attention of Neil Fraser, a partner in another heir-hunting company. He thinks that Mr Silye may have bundled the Hertfordshire property into a will in an attempt to fake ownership.

"He must have gone past that house and thought, 'I'll just take that derelict house. How can I get that house? Well, I can put it inside a will!"

Crucially, the will was accepted by the probate service, who did not check or raise any questions about the Hertfordshire house.

We were unable to trace Roland Silye in our investigation, and his motivation remains a mystery.

The will would not give him possession of the Hertfordshire house - the property registry and the electoral roll name the owner as a woman who would be in her 70s.

However, Mr Fraser speculates that the will could be used in future as leverage to take ownership when the real owner dies.

Despite reporting his suspicions to the police and the probate service, he says action was not taken.

Mr Silye cleared probate not only for Mr Haxton's estate, but also that of George Woon, an elderly man from Southall, west London.

Mr Woon also died in 2021, and shortly afterwards, his name appeared on Bona Vacantia. Mr Silye came forward with a will which named him as sole heir. Mr Woon's house was later sold at auction for £360,000.

A complex web

We asked an expert in financial fraud, Graham Barrow, to check whether there could be any connection between Roland Silye and Tamas Szvercsok.

Both have names of Hungarian origin, and, according to Companies House, both appear to be directors in a complex and interlinked web of companies.

Mr Barrow established that the address Mr Szvercsok gave in Mrs Harverson's will was also used by Mr Silye for some of his companies.

What these companies do is unclear, although some have been struck off for fraudulent addresses, and others have been warned for failing to provide accounts.

The pattern - multiple businesses, related addresses, similar names - is one which often indicates a criminal network, says Mr Barrow.

He adds that owning multiple companies can allow criminals to disperse funds across different accounts and locations, and makes life more difficult for law enforcement.

Another Hungarian name featuring in this web of companies is Bela Kovacs, who, according to a will dated 2021, was heir to the entire estate of Michael Judd, from Pinner, west London.

According to his neighbours, Mr Judd was a multi-talented individual with a distinguished record in the security services. However, in his final years he had become something of a hoarder, seldom leaving his house.

One neighbour, Chris, told us he thought the will had sounded strange and not only because Mr Judd had never mentioned Bela Kovacs.

A few months before his death in 2024, Mr Judd told Chris he had made a will long ago, but the people named on it were all now dead. In any case, he added, he did not know where it was.

"I suppose I better try and dig it out some time," Chris remembers him saying.

He feels it's inconceivable that Mr Judd would have troubled himself with these decisions if he had made a will three years previously.

We tracked Mr Kovacs down to a luxury estate in the Watford area but he refused to talk to us.

Joined-up writing

Other factors seem to connect these cases.

The wills made out for Charles Haxton, George Woon and the others we have seen, appear to have been written by the same person, according to handwriting expert Christina Strang.

"The numbers two, four and seven are all written in the same way on several addresses," she says.

She also sees other similarities, such as the spacing of the letters in different signatures, and the positioning of the signatures on the line.

"It seems to be one person actually signing, forging all of these."

Ms Strang also thinks this same person may have also forged signatures for the witnesses named on the wills, none of whom, we found, were apparently known to the deceased, and some of whom might have been completely fictitious.

There are disturbing similarities in the way that properties were treated during and after the probate process:

• Shortly after Mr Szvercsok made his initial claim on Mrs Harverson's estate, her nieces discovered her Wimbledon house had been ransacked
• A workman employed to empty Mr Judd's house told us he had been instructed to empty it quickly, even though this meant having to destroy what appeared to be valuable heirlooms
• After Mr Haxton's house was cleared, the windows and doors were blacked out, and the locks strengthened; a year later, it emerged that it was being used as a cannabis farm (a fact that only emerged when a rival gang tried to force entry and neighbours alerted the police)

A system in trouble

As a result of our investigation, bank accounts for dozens of companies connected to the suspected fraudsters, have been suspended.

In addition, HM Revenue & Customs (HMRC) has told us it now wants to question Roland Silye about inheritance tax which he might owe on the estate of Charles Haxton.

Bela Kovacs was granted probate over the estate of Michael Judd, which was valued at £310,000 - just below the inheritance tax threshold. However, HMRC's interest was also piqued by this case, and it has now suspended a planned sale of Mr Judd's bungalow in Pinner.

Meanwhile, the dispute over Christine Harverson's estate means the probate process has been frozen, and it looks unlikely to be resolved soon. Tamas Szvercsok cannot take possession of her Wimbledon house, but Lisa and Nicole lack the funds to go to the civil court and prove his will is fake.

We wrote to Mr Szvercsok and Mr Silye at the addresses supplied with their probate applications, offering them a right of reply, but we did not hear back.

When we shared our findings with the Ministry of Justice, which is ultimately responsible for the probate system, it told us that it was "working with law enforcement to ensure criminals feel the full force of the law".

However, a different picture emerges from others who know the system.

"Because probate isn't high profile – it's not sort of, for want of a better word, politically sexy, it doesn't stay in the headlines," says former MP Sir Bob Neill, who until the 2024 general election was the chair of the House of Commons Justice Select Committee.

In 2023, the select committee launched an inquiry into the probate system, but it was cut short by the election.

Sir Bob believes an over-eagerness to cut costs by digitising the probate system, has produced weaknesses which fraudsters are now exploiting.

"When you had regional offices you had human awareness, contact and scrutiny that was better suited to pick up cases where things have gone wrong," he says. "A purely sort of automated system isn't really good at doing that."

He says the system introduced in 2017 was a cheap and quick fix. It lacks the sophistication, he says, of programs used by insurance companies to deal with fraud, which can detect patterns of suspicious behaviour.

His concerns are echoed by Anglia Research's investigator, Matt Boardman, who says that previously, executors of wills would have had to attend their local probate registry to swear an oath, which "would allow the registrar to evaluate every single case on its own merit".

He says the system's move online "completely eliminated" the chance to question the executor's demeanour or behaviour.

"Goodness knows just how many of these have already gone through and been processed by the probate registry," he says, "and how rich we're making these people."

Pictures of a weepy Rachel Reeves dominated the newspaper front pages and TV news after her tearful appearance at Prime Minister's Questions earlier this week.

The markets were spooked so much by her emotional appearance that the cost of government borrowing immediately jumped and the pound took a dive.

The sight of most of us crying in the workplace is unlikely to move financial markets, but does it matter if you do?

Does it show weakness, or strength, or simply that you're in touch with your emotions?

Anecdotally, it's not unusual to have a bit of a sniffle at work. Several people got in touch with the BBC to say they had let it all out.

Clara, 48, from Lancaster, said she had become emotional when she was a young graduate getting a "blasting", and years later "in frustration".

"I've also cried after receiving bad news from home and left work immediately."

Emma, meanwhile, felt she had to keep her emotions under wraps because she worked in "a tough male-dominated environment" and would give herself a hard time for "showing emotion or 'weakness'."

Although some research has suggested women are more likely than men to cry, plenty of men told us they had also shed tears in front of colleagues.

Guy Clayton, a doctor, said he had often cried "with patients, colleagues and families over the years, when I've shared their sadness".

A 38-year-old from London who works in finance said he had become emotional at work when dealing with personal issues and felt it showed "a professional dedication" to still turn up.

'Strength, not a liability'

So is crying a strength or a weakness? Executive coach and success mentor Shereen Hoban says it's old-fashioned to think weeping at work is unacceptable.

"We've moved beyond the old-school idea that professionalism means leaving emotion at the door," she says. "In today's world, emotional intelligence is a strength, not a liability."

Career coach Georgia Blackburn says it's not unusual for people at work to be upset, so firms need to know how to handle and support staff who are feeling a bit fragile.

Ultimately, she says it will mean workers get more done.

"An employer that truly listens, shows compassion and understanding, is so much more likely to keep their staff motivated and happier in the long run," she says.

That's been the case for Amanda in Stockport who contacted the Jeremy Vine show on BBC Radio 2.

She cried at a job interview at the University of Manchester 17 years ago, just after her father had been diagnosed with cancer.

She got the job and is still there.

"I cried every day for about nine months until my dad sadly passed away. It just made me realise what an amazing person I work for, and what an amazing place I work at, where that was OK."

'Bring back crying'

Fashion designer Amy Powney was having a bit of a rough time at the end of last year.

She was having an "intense" time leaving a job, and it coincided with traumatic things happening in her life.

Amy, who founded sustainable fashion brand Akyn earlier this year, also felt pressure to be a "poster child" for ethical fashion.

"My to-do list at that time was: feed the kids, pick them up from school, sort that nursery thing out, design the next collection, make sure the staff are OK, sort out that VAT return... and then save the world," she told BBC Radio 4's Woman's Hour.

"I went through this period of time where I just could not stop crying and I was doing it in public places, I was doing it on stage."

She thinks that showing emotion at work has been "demonised" and is unapologetic about breaking down.

"I just think bring back the crying, bring back the emotions," she says.

"Women in leadership should be able to show their emotion. I think it's a superpower. I think it's a strength."

Men v women, staff v bosses

But not everybody thinks that way. Some people are still a teensy bit judgemental, says Ann Francke, chief executive at the Chartered Management Institute (CMI).

Women who weep are seen as "too emotional" while men who mope can be shamed for being soft and vulnerable, she says.

Junior staff can get away with it more than their bosses, but this shouldn't necessarily be the case, she adds.

"When a senior leader cries, it can be seen as shocking or even inappropriate. But when handled with authenticity, it can also be powerful. It shows that leaders are human and care deeply about what they do," she says.

But if you want to climb the greasy pole, it could be best to keep a stiff upper lip, at least in some organisations, says executive coach Shereen Hoban.

Crying could affect your promotion prospects, she says. "Let's be honest. There's still a bias in some workplaces that sees composure as strength and emotion as instability."

But she says some organisations see things differently, and value leaders who are "real, self-aware, and able to navigate complexity, including their own emotions".

She adds that if you break down once at work it "won't ruin your career", and that what matters more is the bigger picture:

"Your performance, your presence, and how you bounce back or move forward with intention," she says.

What to do if you become tearful at work

• Give yourself permission to step back and take a moment

• You don't need to hide your emotions, it often shows you care deeply about your job – that's not a bad thing

• But you should feel supported, so maybe talk to a trusted colleague, take a short break or ask for support from your manager or HR

• Managers and colleagues need to acknowledge when their staff are crying – offer a tissue to them, don't pretend it's not happening

Provided by the CMI