70 years ago tonight Russian troops were advancing through southern Nazi-occupied Poland and closing in on the notorious Auschwitz death camp - the following day they liberated it.
Tomorrow survivors will gather at the site to mark the anniversary.
Our correspondent David Wood reports:
As we approach the 70th anniversary of the liberation of Jews from Nazi concentration camps, efforts are being made to record the stories of the few remaining survivors.
Filming has begun, to preserve the memories of those who left places like Auschwitz alive, using specialist technology, to allow them to interact with people, long after they have gone.
In the latest of special reports cameras have been allowed into the studio where the first of a series of interviews is being recorded in three dimensions, to save the stories of the survivors for future generations.
Michael Billington reports:
Next week marks 70 years since the liberation of the Auschwitz death camp in Poland and the annual Holocaust memorial day. For many who were freed as the war came to an end they moved to the UK to start a new life. Our correspondent David Wood has been talking to one survivor who was first urged to keep her memories hidden but is proud to share them with students.
Passengers are being told to check in as normal this morning although the airport is temporarily closed. It shut at 4am due to the snow. Airport managers say they are hoping to re-open around 8am.
Next week, the 70th anniversary of the liberation of the largest and most notorious Nazi concentration camp - Auschwitz in occupied Poland.
It is also Holocaust Memorial day and in the run up to it, we have a series of special reports including one from the National holocaust museum in Newark.
In Auschwitz more than a million people died.
Frank Bright was one of the survivors but his parents and most of his classmates did not get out alive.
He's 86 now and more determined than ever to keep their memories alive. You may find parts of Natalie Gray's report upsetting:
Muslim leaders in Bradford have reacted angrily to a suggestion that they should do more to root out extremists.
The call came in a letter to a thousand Islamic leaders from The Communities Secretary Eric Pickles - a former leader of Bradford City Council.
But the city's Council For Mosques says Mr Pickles has, inadvertently blamed and targeted the Muslim Community.
Other Muslim leaders though have welcomed the latest effort to stop youngsters being radicalised. Mark Witty reports.
Former chief rabbi Lord Sacks says he understands the frustrations of Muslim leaders who feel they are being held responsible for dealing with the radicalisation of young people.
Lord Sacks' comments come amid a row over a Government letter asking Islamic leaders to do more to tackle extremism.
"The problem is ... that letter suggested that the Muslim community within Britain can contain its own radicals," he told the BBC.
"The truth is that Islamism, like all modern global political movements, is actually a global phenomenon - transmitted by the internet, transmitted by social media - and so I would not be surprised if the Muslim community didn't say 'You're asking of us something that is not under our control'.
"I am absolutely sure that the Government was incredibly well-intentioned - Lord Ahmad and Eric Pickles are terrific people - but I can kind of see that Muslim communities said 'Why are you pointing the finger of blame at us?'."
David Cameron has defended a letter sent to Muslim leaders asking them to do more to combat extremism, saying anyone who opposes it "really has a problem".
"I think it is absolutely right to write this letter, to say that we all have a responsibility to fight extremism," the Prime Minister said after a speech in Ipswich.
"Anyone, frankly, reading this letter, who has a problem with it, I think really has a problem.
"I think it is the most reasonable, sensible, moderate letter that Eric could possibly have written.
"Frankly, all of us have a responsibility to try to confront this radicalisation and make sure that we stop young people being drawn into this poisonous fanatical death cult that a very small minority of people have created."
A minster has hit back at criticism of a letter sent to mosques in England, insisting it had an "explicit message" of togetherness with the Muslim community.
Harun Khan, from the Muslim Council of Britain, has challenged Communities Secretary Eric Pickles for writing to more than 1,000 leaders asking them to do more to tackle the radicalisation of young people.
Speaking to the BBC Radio 4 Today programme, Lord Ahmad said: "I think his response is disappointing.
"Within the letter there is an explicit paragraph that says British values are Muslim values. You can't be more explicit than that.
"Perhaps he wasn't clear in what the letter said but if you have seen a copy of the letter ... it has been pretty explicit that we want to work together with the Muslim community."
An open letter to more than 1,000 Islamic leaders in England, urging them to do more to tackle extremism, has drawn criticism from the Muslim Council of Britain.
The organisation has asked Mr Pickles to "clarify his request" as it questioned whether if, like "members of the far right", he was suggesting that Islam is inherently apart from British society.
We will be writing to Mr Eric Pickles to ask that he clarifies his request to Muslims to 'explain and demonstrate how faith in Islam can be part of British identity'.
Is Mr Pickles seriously suggesting, as do members of the far right, that Muslims and Islam are inherently apart from British society?