Lifelong virgins are not uncommon in nature. In some social insect communities — bees, ants and wasps, for example — a small percentage of individuals are "breeders," and almost everybody else works their butts off taking care of their kids (#nojudgment). In other animals, like elephant seals a few males monopolize the mating scene, which leads to an awful lot of dudes who live in complete celibacy. Around 80 percent of male elephant seals never even get the chance to mate, but those 20 percent who do might inseminate up to 250 females in their lifetime.

So how many humans live their whole lives as virgins?

That's a tough question to answer. Biologically, losing one's virginity means having potential for baby making sex for the first time. And though that concept makes sense when you're trying to identify patterns in who reproduces and who doesn't, sextual experience for human is varied enough to make the social concept of virginity kind of useless past that point. Accordingly, the data's not crystal clear. After all, if all you want to know is who passes on their genes, who cares if a person touches one body part to another person's body part? What's the difference between a woman who's never had a sexual encounter, a woman whose sexual partners have all been women, and a woman who never has children due to polycystic ovary syndrome or some other condition preventing her from conceiving? And then, there are those who don't engage in the act because they've taken vows of celibacy, because they identify as a sextual , or because they just never, ever meet someone willing to share an intimate moment. In this way, the human construct of virginity and the human process of reproduction have very little to do with one another. But in general, the human reproductive strategy is very different from those of both ants and elephant seals. We are equal-opportunity reproducers, and the vast majority of us, at some point in our lives end up trying out this whole sex thing whether for reproductive or social reasons, which can sometimes take place at the same time.

Stars come in huge range of different sizes neutron star can be just 20 to 40 km in diameter, whereas white dwarf can be very similar in size to earth's The largest supergiants, on the other hand, can be more than 1500 times larger than our Sun. With the Sun having a diameter of 695,000 km, this means that in the extreme cases, we are looking at a star of over 1,000,000,000 km. However, because supergiants are overly bloated stars in the final stages of their lifetime, they are far less concentrated (or dense) than a typical sun-like star, and so wouldn't actually weigh a great deal more than the Sun. Indeed, the famous red giant, Betelgeuse, is about 1000 times larger than the Sun, and yet only weighs about 15 times as much. With the atmosphere of large stars being so spread out, they tend to be a lot cooler and redder than a typical mid-life star. 

The head of MI5 today warned Britain is facing the biggest terror threat of his 34 year career - as he said tech giants have an 'ethical responsibility' to crack down on extremists.

Andrew Parker said extremists are mounting deadly terror attacks with just a few days of planning as the UK sees a 'dramatic' jump in the scale and pace of the threat.

In his annual 'state of the union' assessment of the threat facing the UK, he said extremists are exploiting 'safe spaces' online, hindering intelligence efforts to root them out. 

And he issued a fresh challenge to technology firms, saying they have an 'ethical responsibility' to help governments confront the threat.

His stark warning comes after Britain was hit by five terror attacks this year - killing dozens and injuring hundreds more. In his first substantial remarks since the wave of carnage, this year, Mr Parker detailed the 'acute and enduring' challenge posed by Islamist terrorism. 

Twenty plots have been foiled over the past four years, including seven in the last seven months.

Speaking in central London today, he said: 'We've seen a dramatic up-shift in threat this year.

'Today there is more terrorist activity, it's coming at us more quickly and it can be harder to detect.'

Security services and police are operating at a scale which is 'greater than ever before', he said. They are probing well over 500 live operations involving around 3,000 individuals, he revealed.

And the top spy also warned that as Islamic State - also known as ISIS or Daesh - are on the run in Syria, British intelligence services have to assess the risk posed by those fleeing the war in the Middle East. 

The family of a charity worker murdered for his iPhone have told of their agony at losing their talented and kind-hearted son.

Two teenagers, aged 17 and 18, have been arrested after Abdul Samad stumbled to his front door and buzzed for help, following the attack by two moped-riding thugs.

As he lay dying on the doorstep of the family home in Little Venice, his parents, Layla Begum and Fazal Miah, comforted him during his final moments.

The 28-year-old as rushed to St Mary's Hospital in Paddington but he died just an hour later after the knife 'went through his heart. Tragically, Mr Samad had been due to marry his long-term girlfriend in 2018. 

His devastated brother, Abdul Ahad, said he received a phone call from his mother to tell him that Mr Samad was dying.

'He loved helping children. That's the sort of person he was. This is a young life gone and such a lovely life,' he told the Evening Standard. 'He was full of energy and loved the kids he worked with. You're not going to find a nice person. It was over a phone, it's just so senseless.' 

Mr Ahad said his brother was able to stagger back to the family home and press the door buzzer before his parents rushed down the stairs to find their son lying on the ground.

He said his brother, who had never been in any trouble, worked for the Dragon Hall Trust charity, helping young people improve their computer skills.  

'He was born in St Mary's Hospital and he's died there. We want these people to go to jail and never come out,'said Mr Ahad. 

He said the parents of Mr Samad, who studied economics at the University of Westminster, arrived in the UK from Bangladesh in the 60s to give their children a better life. Nicole Furre, director of the Dragon Hall Trust, said: 'We are just all devastated by the news.

'We're a very small team here and we're all very shocked and were just trying to process the news.

'He loved his job as a youth worker. He was fantastic with the young people who he was teaching.

'He would do the coding lessons and make apps and he really made it come alive for them all.

'All the children and young people who use the centre will be extremely sad and upset. It is all terribly sad, and such a waste.

'We are making plans about how to manage the children and young people when they hear the news, because he was loved by so many of them.

'They are going to be very upset because they had a close relationship with him.

'He was great and particularly talented whenever there was an issue with a computer or technology, Abdul would know how to sort it out. 

President Donald Trump fielded a question about sexual harassment claims against him in the White House Rose Garden on Monday, branding them 'totally fake news.'

Trump got asked about the claims following a weekend revelation that attorneys representing Summer Zervos, a 2007 'Apprentice' contestant, had obtained a subpoena ordering the Trump campaign to hand over any documents it had related to Zervos.

The subpoena further seeks 'all documents concerning any woman who asserted that Donald J. Trump touched her inappropriately.'

'All I can say is it's totally fake news. It's fake and made-up stuff and it's disgraceful what happens, but that happens in the world of politics,' he told reporters at the White House. Zervos is suing Trump for defamation after he said she lied about her claims. 

Multiple other women came forward during the campaign to say Trump had touched them without consent.  

The reporter who asked Trump about it mentioned the 'avalanche of allegations made against Harvey Weinstein' – who is accused of harassment, groping, and rape by a parade of actresses – as well as the subpoena, prompting the president's response. 

The lawsuit by Summer Zervos, a former contestant on Trump's TV show 'The Apprentice,' says he made 'numerous false, defamatory statements' in response to her allegations that he tried to kiss and grope her without her consent.

The subpoena, which was issued in March but filed September 19, directs the Trump campaign and its affiliates to hand over documents on Zervos and her associates as well as on 'any woman alleging that Donald J. Trump touched her inappropriately. It also seeks documents on 'any accusations' made during Trump's election campaign that he 'subjected any woman to unwanted sexual touching and/or sexually inappropriate behavior,' and on the president's responses to allegations against him.

The subpoena, which previously not been made public, was first reported by BuzzFeed News.

Zervos said last year that Trump had made unwanted sexual advances toward her when she met him at the Beverly Hills Hotel in Los Angeles in 2007 to discuss career opportunities. Trump moved toward her aggressively during the encounter and touched her on the breast but she rebuffed him, she alleged.

Zervos and several other women who made similar allegations came forward after a 2005 videotape of Trump bragging about groping women surfaced in early October.

The president-elect claimed his comments on the tape were 'locker-room banter,' and denounced the sex assault allegations as lies and fabricated stories.

According to Zervos' suit, 'Mr Trump became obsessed with calling Ms Zervos and any other woman who came forward to report his abuse liars with improper motives.'

Trump is a 'liar and misogynist' who has 'debased and denigrated Zervos with false statements about her,' the lawsuit says. The subpoena also calls for all of his campaign documents related to the shocking tape and to his numerous denials of the accusations that were lodged against him during that time period.

Trump said on Twitter and in public statements last October that all of the women were pushing 'false allegations and outright lies' in an effort to help elect Hillary Clinton as president.

He even suggested that some of the women were not attractive for him to target and threatened a lawsuit against them all.

A middle-class mother died from alcohol poisoning after drinking wine all day while on a holiday to celebrate a break in her breast cancer treatment.

Therapist Valerie Jones, 54, was taken to the Greek island of Santorini by her company director husband Nigel as a treat to recuperate from her illness.

An inquest heard that on the second day of the holiday, Mrs Jones had been drinking wine during a morning sightseeing trip, at lunch and again over an evening meal.

She then had a nightcap with her husband before joining a wedding party at their hotel.  Mr Jones, the director of a chartered surveyors in Yeovil, Somerset, went to bed and told his wife to enjoy herself at the party, where she had made new friends.

He woke later that night to be told she had collapsed in the toilets shortly before 2am. She was found to be unresponsive and died on arrival at Santorini General Hospital.

Bournemouth Coroner's Court was told that Mrs Jones was nearly four-and-a-half times the drink-drive limit, which in the UK is 80mg alcohol per 100ml of blood.

Such levels are enough to cause sudden death from acute alcohol toxicity, the inquest heard last week. It is not known how many glasses of wine Mrs Jones had drunk, and the inquest was told she did not have a drinking problem.

Mrs Jones, who lived in a £1.3million home in Cattistock, Dorset, shared a love of horses with her 19-year-old daughter Immie, a talented dressage rider. 

As well as being a company director, Mr Jones was a governor at the £22,000-a-year Sherborne Preparatory School. Pathologist Dr Kudair Hussein told the inquest: 'When blood alcohol levels go above 350mg per 100ml, it is not unknown that people can die suddenly.

'My report showed Mrs Jones had 358mg of alcohol per 100ml of blood. On the balance of probability, you can conclude this was the cause of her death.'

Mr Jones, 52, told the hearing: 'We had some wine taking in the sights, as one does on holiday.

'We then had some wine with lunch and again later on with our evening meal. We then decided to head back to the hotel and had a nightcap.'

Mrs Jones, described at the inquest as 'bubbly, social and caring', had become friendly with a group attending the wedding party and was invited to join them for drinks around midnight. Mr Jones was tired and went to bed. A few hours later he awoke to find his wife had not returned. 

A cancer nurse, a young father and the youngest of 11 siblings have been identified as the three victims killed by Hurricane Ophelia in Ireland.

Winds of 119mph battered the coast, leaving 120,000 homes without power, ripping roofs off buildings and forcing airbourne flights to land. 

The blasts were so strong that a stand at Cork City Football Club's stadium, Turner's Cross, collapsed.

Families paid tribute to road traffic victims Clare O'Neill and Fintan Goss, 33, as well as 31-year-old Michael Pyke, who died in a horrific chainsaw accident.

The first of three people to die as a result of yesterday’s devastating weather  conditions was cancer nurse Mrs O’Neill. She was killed when her car was struck head-on by a section of a tree.

A branch smashed through the windscreen and it is believed that it struck her with full force straight in the chest.

She is thought to have died immediately and was pronounced dead at the scene of the appalling tragedy on the R671 near the village of Aglish, in Co Waterford.

A passenger, believed to be her mother and who is in her 70s, was taken to Waterford Regional Hospital, where she was recovering from the injuries she had received.

Gardaí were at the scene at 11.40am. They said: ‘A female driver in her 50s was fatally injured when the car she was driving was struck by a falling tree. A female passenger in her 70s was injured.

Ms O’Neill, who is also survived by her daughter Rosie, is believed to have been driving her mother between Aglish and Clashmore, Co Waterford, when the tree fell on their car.