Oliver Conway

And are there other similar conditions that can be passed on unwittingly by donors?

Yeah, there is screening of sperm donors.

I mean, there is a reason why of the people that come forward for sperm donation, less than 5% of them are actually accepted.

And that's through screening of not only the sperm quality, but also for other genetic diseases.

Now, what the European Sperm Bank in Denmark has stressed as part of this is that overall, the risks from a sperm donor are

are lower than they are through normal conception, through meeting your partner-to-be, because the screening that is involved does reduce the risk.

But cases like this can still happen, and many fertility experts have said to me that it is going to be impossible to reach a world where you can screen for every single genetic disease that could possibly be passed down.

Our health and science correspondent, James Gallagher.

The winner of the Nobel Peace Prize, Maria Corina Machado, has been in hiding in Venezuela since accusing longtime president Nicolas Maduro of stealing the election last year.

So there was some doubt over whether she'd be able to leave her homeland to attend the Nobel Awards ceremony in the Norwegian capital, Oslo.

Well, in the event, Miss Machado didn't make it in time, but she released a statement saying she was on her way to the city.

The prize was accepted instead by her daughter, Ana Corina Sosa Machado.

Before handing out the award, the Peace Prize Committee chairman, Jürgen Wettner-Fritnes, called on the Venezuelan president to resign.

Here today, in this hall, with all the gravity that attends the Nobel Peace Prize and this annual ceremony, we will say what authoritarian leaders fear most.

Your power is not permanent.

Your violence will not prevail over people who rise and resist.

Mr. Maduro.

accept the election results and step down.

Well, as we record this podcast, Ms Machado is still thought to be heading to the Norwegian capital.

In her earlier message, she said she was very grateful to the many people who risked their lives so I could get to Oslo and indicated she was getting on a plane.