Professor Charles Godfray, Director of the the Oxford Martin School tells Jim Al-Kahlili about the intricate world of population dynamics, and how a healthy obsession with parasitic wasps might help us solve some of humanity's biggest problems, from the fight against Malaria to sustainably feeding a global community of 9 billion people.

Sir Jonathan Van-Tam, or ‘JVT’ as he's arguably better known, first came to widespread public attention in his role as Deputy Chief Medical Officer during the Covid-19 pandemic.

But even before that, Jonathan had built an impressive career based on a long-held fascination with respiratory illness and infectious diseases. He’s worked across the public and private sectors, contributing significantly to improving our understanding of influenza and treatments to address such viruses.

It’s hard to believe that back in his teens, JVT – the man who advised the nation on pandemic precautions and helped make the UK’s vaccine roll-out possible – nearly didn’t get the grades he needed to go to medical school. But early challenges aside, Jonathan went on to discover a love for both medical research and public speaking: making complex public health messages easier to digest – not least by using analogies relating to his beloved football.

Speaking to Professor Jim Al-Khalili in the first episode of a new series of The Life Scientific, Jonathan discusses his life and career: from academic emphasis in childhood and imposter syndrome at medical school, to pandemic pressures around Covid-19 and big birthday celebrations.

Dr Chris van Tulleken wrestles with the dilemma of slaughter. Could he bring himself to dispatch an animal himself? Is he happy supporting an industry which kills animals in his name? And if not, what could he eat instead?

Chris explores the rise of the alternative protein industry – plant-based meat alternatives, lab-grown meat, or most shocking of all for some, actual meat abstinence, Veganism.

And it is time to revisit that initial question: what’s influencing our choices when it comes to eating chicken, what impact is that having – and are we bothered?

We're a planet addicted to chicken and our appetites fuel a massive global industry, but is it one we should support?

While some cite it as a shining example of a super-efficient food production system, one that could help drive food security around the world, others say it is a cruel, destructive and outdated structure that makes a few people richer while exploiting others – along with animals and the environment.

In Brazil, one of the world’s biggest chicken and soya producers, our reporter Leonardo Milano hears accusations of threats and pollution relating to the feed sector; while in Africa, Dr Chris van Tulleken learns about poultry-farming initiatives helping to make struggling nations more food-secure.

There are also other challenges that the industry is wrestling with: from antimicrobial resistance to the threat of another major global pandemic - bird flu. So is there a ‘big business bad guy’ to blame – or does responsibility lie closer to home, with unquestioning consumers like Chris?

Like many of us, Dr Chris van Tulleken is always trying to eat better food: healthy, high welfare, good for the environment. This kind of consumer demand is making the chicken industry better, in tiny increments. So why do so many of us give ourselves a pass when it comes to the food we know we should not be eating - fast food?

Chicken is at the very heart of this industry. As a cheap meat that does not have a strong taste, can easily take on other flavours and does not have any religious restrictions, it’s the ideal takeaway ingredient; from nuggets to chow mein to tikka masala.

And although we might be careful about chicken choices when buying it raw, somehow we don’t seem to mind turning a blind eye to the origins and nutritional content of our fast food favourites, especially if we’re hungry.

Chris discovers just how bad this food can be for both us and the planet, and why we are powerless to resist it.

For eons, salt has been crucial to human health, culture, and diet. On this episode of The Evidence, we explore the strange science of salt taste – why it can be sweet, salty, or even a flavour enhancer. We look at how salt keeps our bodies running, and what happens if we have to little of it. And while too little salt may be bad, too much is also a problem. What does the science say about how much salt is optimal, and what can we do to make sure we’re eating the right amount? Claudia Hammond is joined by a panel of salty experts who will help find the answers to these questions and more.

Do YOU know what you're eating? Are you sure?

Dr Chris van Tulleken is keen to make good food choices, and buy the best chicken possible for his dinner. High welfare, tasty, and good for the environment, ideally. But it's not as easy as that. How CAN he make good food choices if he has no idea what he's buying?

Chris explores what we actually know about the food we buy, and to what extent we can trust what's on a label.

He also uncovers the startling truth about two very different ways that we buy chicken - lifting the lid on why sometimes, even the most moral meat shoppers turn a blind eye...

We’ve heard about the potential problems around chicken welfare. But how does that square with their impact on the environment?

Dr Chris van Tulleken finds out what it takes to produce the most eco-friendly chicken meat possible. And makes a devastating discovery. Welfare concerns, and environmental credentials, often pull in OPPOSITE directions. Does he want to eat the happiest birds, or the ones kindest to the planet?

Halfway through his poultry quest, Chris remains massively conflicted: he loves chicken, but some of what he’s discovered makes him question how much he eats it. Will he still be able to look at it the same way as he goes deeper down the rabbit hole? And more importantly, should he keep serving it up to the family?

We eat chicken. A LOT of it. We might love the taste, but what about how we're treating those birds?

After witnessing first-hand the reality of indoor chicken farming - how most of the chicken we eat is raised - Dr Chris van Tulleken wants to know: are the birds happy enough, or is our method of rearing cheap chicken actually cruel?

If so, what’s the ‘happier’ alternative – and do carnivores like Chris care enough to pay the price for that, or does a love of meat ultimately trump ethics?

Chris battles with his conscience, and finds the answer hard to stomach.

So we started farming this bird called chicken, and it spread around the world. But what does it actually TAKE to feed us the amount of chicken we want to consume?

100 years ago this was a scrawny, egg-laying bird, only good for a stew once her eggs ran out – no one ate chicken meat. Fast forward to today and it’s the most consumed protein on the planet. How did we come to eat it in the first place, and what are the consequences of producing chicken meat on the vast, industrial scales we now consume it?

Dr Chris van Tulleken uncovers the extraordinary accident of history that birthed a new industry, and changed the way we eat – and think about – meat forever.