And the Hello and

Hello and welcome to the naked scientists with me Ben Valsler and with Cat Arney. Hello and in the show this week how ovaries become genetically damaged with age, why a brisk

power walk could generate electricity and what is coronavirus.

We'll discover more about this contagious infection and find out why it's making headlines.

Thanks, Cats. Also this week we will be tugging on your scientific heartstrings to celebrate the science of love.

Is chemistry, romantic chemistry, really just a chemical reaction?

We will also discover how a simple brain switch dictates how a fly will behave during mating

and will ask if humans are meant for monogamy.

So if you'd like to get in touch with us here at the naked scientists you can email

Chris at the naked scientist.com you can tweet at naked scientists or just find us on Facebook.

The Naked Scientists Podcast is powered by UKfast.co.uk. Now first of all joining Kat and me to take a look at the science news this week is

science journalist Mark Peplo, Laurie Wickless from the National Physical

Laboratory, Dan Cleary, deputy news editor for Science magazine and Laura Howse from Chemistry

World. Thank you all for joining us. It's a very full studio today. Now,

Kat, what have you got for us first? Well, this is a kind of romantic story.

It's to do with babies, whereas to do with eggs, which are kind of pre-babies, I guess, but it is a sad fact that a woman's

egg cells don't last forever, and we do eventually lose our fertility, and women are born

with over a million potential egg cells in our own

bodies but only 500 of these turn into mature eggs and sadly they're almost all gone

by the time a woman reaches her early 50s.

But this happens at very different ages for different women,

suggesting that there's a hefty genetic component

...