With the battle against climate change never far from many of our minds this week, 6 years on from when Brainwaves first visited, Pennie Latin returns to the Flow Country in Caithness and Sutherland to remind us how that much-maligned, but globally rare, feature of the Scottish landscape: the peat bog might be crucial as a carbon sink. Because it is now deemed so precious a group called ‘ The Peatlands Partnership’ has been formed with the aim of applying to get the Flow Country designated as a UNESCO World Heritage Site. If it successful then the area will rank alongside the Grand Canyon and the Great Barrier Reef as one of the most important natural sites in the world but, could this precious landscape itself be in danger of the effects of climate change? We'll be discovering how new research hopes to find out.

How comfortable are you with virtual reality? We're not just talking about gaming but across your life and your family's life? With virtual reality being developed in just about every area of our lives Pennie Latin weighs up the value of VR. There's no doubt VR is a powerful tool and results from research into the potential for using VR to treat mental health issues like schizophrenia and anxiety are looking very promising but how worried should we be about that power? Does the fact that VR can be so immersive and engaging mean it also needs to come with a warning? Pennie will be visiting Oxford University to try out some of the latest immersive therapies for herself plus she'll join a primary school in the Highlands to see VR being piloted in an educational setting. So on balance will we love or loathe the prospect of a VR saturated world...listen to find out!

Who doesn't love dinosaurs? Dr Steve Brusatte certainly does and his knowledge, story telling and passion for the subject are utterly infectious. In this Brainwaves Pennie Latin joins Steve in his Edinburgh laboratory to discuss the 5 fossils which best capture his love of the subject together with a flavour of a story which lasted over 180 million years then ended so dramatically with a mass extinction. Among his chosen 5 fossils Steve discusses the Sauropod trackways he discovered on the Isle of Skye, Scotland's Jurassic Park, in 2015 and the extraordinary fossil of a Zhenyuanlong which he first saw in China and is a brilliant example of a feathered dinosaur.

Top para-cyclist Karen Darke MBE won silver in London and gold in Rio now she's trying to make it to a third consecutive Paralympic games in Tokyo but its a tough challenge. So Karen's enlisted the help of Williams Advanced Engineering to see if they can bring a Formula 1 approach to maximising her performance this summer. In this Brainwaves Pennie Latin joins Karen behind the scenes to see just what science and technology can offer our elite athletes.

Professor Lesley Yellowlees CBE has an extraordinary passion for life and for her work as an inorganic chemist. A leading figure in the fields of spectroelectrochemistry and solar energy research Lesley's also a pioneer - she was the first female head of Chemistry and then of Science and Engineering in Edinburgh. She was also the first female president of the Royal Society of Chemistry and is a passionate champion for diversity in science. In this fun, fast talking and hugely engaging conversation Lesley chooses 5 objects which capture her fiery character; love of family, food and travel, and the work that drives her so much.

How often do you do a number '2'? Seriously! And do you know how often your friends and family members have a poo? No? So how do you know if you're normal and what does a well functioning gut system mean when it comes to our toilet habits and our health?

Pennie Latin goes on a frank and fearless journey to find out more about the human gut system. Along the way she talks to Kevin Whelan, Professor of dietetics at King's College London, about what normal is when it comes to going to the loo. Dr Alan Walker, principal investigator at the Rowatt Institute in Aberdeen, shows Pennie how they're using an artificial gut to research how microbes in our gut interact with the food we eat and she takes a tour of EnteroBiotix where faeces from healthy donors are processed to make a radical treatment for c difficile infection. Pennie also manages to persuade a family to keep a 'jobbie journal' for a week so they keep account of the regularity and consistency of their toilet habits.

Bold, brave and utterly fascinating, join us for an irresistible slice of everyday science which impacts each and every one of us!

Pennie Latin joins marine ecologist and deep ocean explorer Dr Jon Copley for a fascinating insight into his extraordinary world. Jon is a 'bathynaut' (someone who has gone deeper than 200 meters under the ocean) who specialises in researching hydrothermal vents deep under the ocean. His watery office is a small acrylic bubble capable of diving to incredible depths which allows him to explore, observe and research the amazing array of life which inhabits the half of our world which is covered by water more than 2 miles deep. In a single drop of sea water there are a million bacteria, and a bath tub of water, says Jon, will give you as many life forms as there are stars in our galaxy! Unfortunately as well as finding new species Jon is also witness to man's impact on the deep ocean environment and finds evidence of human rubbish even thousands of meters under the sea.

So join Jon and Pennie as they dive deep into the subject of oceanography, you'll hear some remarkable stories and discover species which will take your breath away but there's a few thought provoking lessons along the way too.

Gill Skene didn't know what was wrong with her after the traumatic birth of her daughter, she just knew she wasn't depressed and she wasn't behaving normally. Flashbacks and paranoia culminated in a moment when Gill realised she was capable of attacking her husband after he came between her and her baby, she sought help and was diagnosed to postnatal PTSD. In this moving and thought provoking Brainwaves, Pennie Latin hears from Gill and her husband, Mark, then sets out to investigate what we know about a mental health condition which is estimated to affect 30,000 women in the UK each year. Along the way Pennie discovers its not just birth mothers who are vulnerable to stress following a difficult birth, clinical staff are also presenting with PTSD. Pennie asks how much we know about the condition and what can be done to identify and support sufferers.

We live in this amazing country so why would we want to just pour a cocktail of random pharmaceuticals into the environment? As Pennie Latin discovers, to her astonishment, in Scotland we’re doing that each and every day just by taking a pee. It’s not just peeing the medicines out either, we’re even adding to the problem when we think we’re being conscientious by flushing unwanted pills down the loo. When you take into account the 1.4 million prescriptions dispensed in Scotland every year, that's a lot of potential for pharmaceutical pollution.

In this Brainwaves Pennie hears about a pioneering and unique collaboration involving NHS Highland, researchers from the University of the Highland and Islands and Glasgow Caledonian University, together with Scottish Water and SEPA who have come together to share wisdom, research, data and ideas for how to stop this environmental problem before it gets any worse.

Its an extraordinary story and one where we all have a part to play.

Music by Blue Dot Sessions

September 7th 2019 marked the 20th anniversary of a unique and remarkable study into how our brains age. But it's a story which has roots back in 1921. Almost all the Scottish children born in that year were given a test in 1932, when they were 11, into their thinking abilities. It happened again in 1947 with a second group of 11-year-old Scottish children born in 1936. The results of those two sets of tests were tucked away until, in 1999, Professor Ian Deary and his colleagues from the University of Edinburgh unearthed the orginal data and had the idea of inviting many of those original participants back to be tested again in a unique study.

Over 500 volunteers from those born in 1921 and over 1000 from those born in 1936 came forward and ever since their thinking skills have been closely studied and scrutinised, tested and their brains scanned to see whether they might reveal some of the secrets to ageing well. What impact does your thinking ability at the age of 11 have on your thinking ability as you reach old age? Are there particular activities, hobbies, careers or behaviours which contribute to healthy cognitive ageing? Why do people who drink more alcohol seem to perform better on cognitive thinking skills tasks? Before you raise a glass in delight, the answer is not as straightforward as you might think!

The richness of the data collected by the Lothian Birth Cohort Studies over the past 20 years is unprecedented and has contributed to over 500 papers. The participants themselves have become global superstars in the fields of neuroscience and cognitive ageing.

In this special Brainwaves, Pennie Latin joins the 20th anniversary celebrations in Edinburgh, hears from Professor Ian Deary and his team and meets some of the participants themselves, including 98-year-old Margaret MacKie who still does the Scotsman cryptic crossword everyday and says her ambition is to complete it six days in a row!

It's a remarkable success story of a unique collaboration between a generation of Scots and a pioneering team of researchers that will leave a legacy we all might learn from.