A volunteer from Wikipedia is training staff at the BBC Jerusalem bureau on how to create and edit posts.

Once they're trained, they'll be writing about:

• Tamar Ariel, Israel’s first female religious air force pilot  
• Dora Bloch, who was a grandmother on board an Air France plane that was hijacked and landed at Entebbe airport in Uganda in 1976
• Malka Puterkovsky, the head of a women's religious studies institute
• Miriam Peretz, two of whose sons died while serving in the Israeli armed forces

BBC Hindi's Vandana Vijay in Delhi has just created a Wikipedia profile of Birubala Rabha. 

Birubala has been campaigning against women being hunted for witchcraft. This was still a problem in parts of India when she was growing up, with women being shunned, boycotted or even tortured and killed when others accused them of withcraft.

Birubala played an important role in making a stringent anti-witch hunting law. 

Here's the new Wikipedia page - it's in Hindi., external

In Italy, a group of editors are joining in. These people already edit Wikipedia and try to improve the coverage of topics pertaining to women.

And in Germany, a separate group are joining in too.

In Istanbul, Turkey, BBC journalists have set off editing already.

Rengin writes: "We’ve met up to make Wikipedia less sexist in Turkey! Keep watching the names we will add!"

The BBC World Service show Outside Source will be broadcasting live from New Broadcasting House at 1100 GMT. Expect live updates, reaction, and interviews with some of the women writing the Wikipedia articles around the world.

Journalists at BBC India have been working on profiles of the following women:

• Sairee Chahal, a founder of a careers website that aims to get women back into the workforce
• Rajshree Pathy, a businesswoman who fought traditional mindsets to take over her family business in sugar and chemicals 
• Mishi Choudary, a lawyer working on internet freedom and rights online

Muhumuza was a queen in the early twentieth century. She led a rebellion against colonial rulers in what is now Uganda.

Is she on Wikipedia? Not yet.

But that situation won't last long, as BBC Africa are writing a profile for her today.

Renowned human rights lawyer Amal Clooney has chosen Nadia Murad, a Yazidi human rights activist, to be added to on Wikipedia. 

Nadia escaped kidnapping by militants from so-called Islamic State, and has been campaigning for an end to trafficking ever since. 

There is already a short profile of her, external on the online encyclopaedia but we will be adding to it later in the day.

At the BBC's London headquarters New Broadcasting House, students from Harris Academy in Bermondsey, south London, have started making edits in conjunction with BBC School Report., external

Jimmy Wales, who set Wikipedia up, will be on the BBC World Service in a couple of hours, at 11:00 GMT.

Mr Wales has been asked about this before. Back in 2014, he said it was tech-savvy people who were drawn to editing Wikipedia, "most of whom end up being men for various reasons".

"We really want to diversify the community because we know that it helps lead to quality in other areas," he said.

He admitted at that time that the site had "completely failed" on its gender gap targets, and was "doubling down" on efforts.

Here's the 2014 interview.

“BBC Indonesia kicks off its #100WomenWiki Editathon from Jakarta!” 

They're women you may have heard of, or if you've just heard of them for the first time maybe you'd like to look them up on the biggest free encyclopaedia... but they're not there. 

BBC Three journalists have written about five women who should be on Wikipedia but aren't. There's a comedian, a squadron commander, a campaigner against the tampon tax. Can you think of others? Now's the time to get them online.

Read more

It's already afternoon in Nepal - and BBC teams there are working hard on 20 Wikipedia pages.

They're writing about the politicians Renu Chand and Astha Laxmi Shakya, the bodybuilder Nanita Maharjan, and the 18th century queen Rajendra Rajya Lakshmi among others.

BBC Nepal and teams from BBC Media Action -  the BBC's international development charity - are hard at work.

The BBC's 100 Women project has been running for four years now, profiling notable women from around the world. 

This year's 100 Women include:

- Chan Yuen-Ting, the first female football manager in the world to lead a men's team to a domestic top-flight league title

- Jane Elliott, an educator, activist and feminist who created the 'Blue eyes-Brown eyes' exercise to teach children about racism

 - Ellinah Ntombi Wamukoya, the first woman to be elected bishop in the Anglican Church of Southern Africa

See the full list here

But half the women who have been profiled in the course of these four years still do not have a Wikipedia page.

Fiona Crack, the BBC's 100 Women editor, writes: "We've decided to team up with Wikipedia because, like the BBC World Service, they're a non-profit organisation with a global and multilingual reach.

"This is an ambitious project, but enlisting women to contribute is a great way to help make the internet less gender-biased."

Read more

Image source, Wikimedia/Luisalvaz

I have written more Wikipedia articles than any other woman.

Anarchists and vedettes, writers and scientists, I've written about them all. Initially, I was surprised that anyone read a word that I wrote, but when I was notified that an article I started had been mentioned on the Wikipedia main page, I was humbled, recognising that my voice was important.  

Understanding that every one of us can contribute to the sum of all human knowledge is incredible. Never before in history has there been an opportunity for anyone to contribute to an encyclopaedia.  

Read more here

How to create a new profile on Wikipedia

1. Go to ANY Wikipedia article
2. Highlight the last part of the URL where the person is named - for example https://en.wikipedia.org/wiki/Alicia_Keys
3. Change this to the name of the person you want to add
4. Press enter....
5. It will give you an option to 'Start the Article', click on that.
6. To add Images: On the Toolbar at the top of the page click on 'Insert', then 'Media' to look for Open License images of the person you want to add. Please note you can only add free-to-use pictures of the people you add on Wikipedia.
7. Start editing. You may wish to use 'Visual Editor' (the pen icon on the far right)
8. In 'Edit Summary' pop-up box, please give a short description of what you have done, and don't forget to use the hashtag #100Womenwiki, for example 'I've created a page for Alicia Keys #100Womenwiki'
9. Save the entry and this will "publish" the article.

Read more on how to join in

Firstly, not many editors or Wikipedians - the people who write, extend, source and tweak the information on the site - are women. Fewer than 16% of contributors , externalaround the world are female. 

We're not the first people to wonder about this. It's been studied academically, and earlier this year Julia B Bear and Benjamin Collier published an article, external saying there were a number of factors:

- Women felt less confident in their expertise

- The editing process can involve conflict with other users and women were less comfortable with that

- They were more likely to report negative responses to critical feedback

As for the people who feature on Wikipedia - well, it's an online encyclopaedia of notable things and people. In the history of the world, it is overwhelmingly men who have been politicians, scientists, religious leaders, army generals and philosophers. 

But there are women - historical and present day - who are notable and aren't on Wikipedia. Those are the women that with your help we would like to write about today.

Good morning from London where New Broadcasting House, the home of BBC News, is getting ready to host a Wikipedia edit-a-thon.

Fewer than 17% of the biographies on the online encyclopaedia are of women - you can watch and join in as we try to change that, with celebrities, journalists around the world and people at home creating new profiles of notable women.

Anyone can join in and you don't have to be a woman to create a profile - but we're concentrating on writing about women for today.

If you write or expand a profile from home, please let us know on Twitter by using the hashtag #100womenwiki.

Some of you are also coming into New Broadcasting House in London, where Wikipedians will be on hand to help.