Do you really know?

During summer holidays, many of us experience the discomfort of motion sickness while travelling by car, coach, plane, or boat. motion sickness is Also known as kinetosis and it’s particularly common in children but can also affect a lot of adults. According to the US government’s Medline Plus portal, one in three people are prone to it. Symptoms include paleness, cold sweats, dizziness, a feeling...

In past episodes of Do You Really Know, we’ve talked about the best holiday destinations in the UK and abroad, as well as how to find the most budget-friendly options. Today though, we’re going to talk about security.  The idea of visiting many countries all over the world is enticing, but it's important to remember that some destinations are significantly more dangerous than others. Rather than m...

In the last few weeks, a thick and foul-smelling foam known as mucilage has appeared in the Marmara Sea on Turkey’s northwestern coast. It’s been unofficially dubbed sea snot by observers, which might sound like a name invented on a school playground. But there’s nothing funny about the environmental impact of this outbreak, which is a result of global warming and pollution. How does this sea snot...

Whether you're lounging on a beach, exploring a new city, or simply taking a break from your daily routine, finding ways to calm your mind while on holiday is really important for our mental and physical health. We often promise ourselves we’re going to disconnect from day one, but it's not as simple as that.  After all, when we’re at work our brains are constantly processing information, making d...

Money can buy a lot, but can it buy happiness? This is a question that philosophers, economists, scientists and storytellers have puzzled over for some time; and if it can, then does more money make you even happier?  According to Prof Jan-Emmanuel De Neve, director at the University of Oxford Wellbeing Research Centre there is a definite link between money and happiness, especially at the bottom...

If you're not up to date with your vaccinations, it might just be time to schedule an appointment with your doctor! When it comes to the diseases we’re going to be talking about today, you could be forgiven for thinking they were a thing of the past, consigned to history.  But believe it or not, some of them are making a comeback in the 21st century. Their resurgence can be partly explained by a f...

Ever since social media came along, dating trends have evolved constantly. They tend to reflect changes in society too. In previous episodes of Do You Really Know, we’ve talked about dawn dating, sneating and ghosting for example. There are so many different terms out there, and not all of them are positive. Here’s another one you may have heard of recently, in particular if you’re single and use...

The world of cinema is full of films and sagas which leave their mark on a generation, sometimes becoming cult films. And another phenomenon is becoming more and more common: that of the spin off. Spin-off films involve the creation of a new work based on the original, focusing on the story of a secondary character. There are a number of reasons why directors and screenwriters have chosen to carry...

Whether you’re going on a beach holiday, city break or camping trip, the chances are you’ll be soaking up the sun’s rays. Sunshine activates vitamin D production in the body, which has numerous benefits like protecting us from disease and improving mental health. But on the other hand, being exposed for too long can accelerate skin ageing. Excessive UV can even lead to skin cancer. According to th...

According to a World Meteorological Organisation report from May 2023, it’s now more likely than not that global temperatures will surpass the key milestone of 1.5°C warming. This is of course down to human-related greenhouse gas emissions, as well as the El Nino weather phenomenon in the Pacific Ocean, which was confirmed to have started as of early June. Of course the long term impact of such wa...

It’s worth bearing in mind that overtourism has become a real nuisance. As tourists, it’s not exactly fun being in a highly overcrowded area, but it’s even worse for the natural environment. Could tourism quotas be one way of addressing the problems? In mid-June 2022, the island of Corsica brought in quotas for three iconic sites: the Bavella needles, the Restonica valley and the Lavezzi islands....

Frenchie shore, Love Island those are typical examples of shows that people love to hate-watch. The practice has become more and more widespread in recent years with the rise of streaming platforms. It seems mutual hatred makes for a strong bond! The term was actually invented back in 2012 by Emily Nussbaum, a well-known critic for the New Yorker. She talked about how she couldn’t stop watching mu...

Studies have repeatedly shown that human sleep quality is deteriorating year after year, for a number of reasons, including workaholic lifestyles and rising global temperatures. Daytime napping shouldn't be seen as a replacement for insufficient nighttime sleep, but there are a number of health benefits nevertheless. It’s actually pretty natural for our bodies too, and has long been ingrained in a...

This summer, relax and learn with Do You Really Know! It's time to learn all about the concepts, words and expressions that surround the summer season! What is vitamin D? Vitamin D was discovered in 1922 by American biochemist Elmer McCollum, who was nicknamed Dr Vitamin by Time Magazine. He found that cod liver oil could still prevent rickets in rats, despite its vitamin A having been removed. Fr...

Have you noticed more of your friends talking about their star signs of late? Maybe they try to guess the sign of people they meet, or come out with unexpected references to “Mercury in retrograde” or “Saturn return” over dinner. Maybe you’re into it yourself; and you have an app which sends you horoscope notifications all day long. It wasn’t so long ago that most people would just read horoscopes...

We’re all aware of the physical risks associated with extreme heat, like dehydration and fainting for example. But a number of scientific studies have shown that heatwaves also have a major impact on people’s mental health. It’s important to highlight that the difference can be experienced by anyone, not just those with existing psychiatric conditions. But one thing is for sure: the vast majority...

At a time when Europe faces a "baby bust," the role of children in public spaces is sparking new debate. Increasingly, restaurants, hotels, and even tour operators are rolling out “adults only” policies. Gone are the sounds of crying babies or kids running around tables, but this shift raises questions about individualism in society. In recent years, child-free options have doubled globally, with...

Digital sobriety is all about reducing the ecological footprint of our daily digital lifestyles. That’s right, using your cell phone, PC or connected refrigerator all contributes to pollution. And it’s on the rise. The transition to digital technology is often presented as being a positive evolution, especially with regards to reducing household energy consumption. But current practices are contri...

A power nap is a short sleep which is long enough to give an energy boost, but not so long that you enter deep sleep. The term was coined by American social psychologist James Maas, a professor at Cornell University. Science shows that power naps could be of benefit to employees in the workplace, where efficiency is key. Sometimes, a power nap lasts just a few seconds, in which case it’s referred...

Knowing the difference between right and left is crucial for various daily activities like driving and navigation. While most of us take this skill for granted, a significant portion of the population faces challenges with it. A study published in 2020 in the Journal of Experimental Psychology estimated that one in six adults struggles to distinguish their right from their left. Of course, if you...

You may have seen it on the news, on social media, or even on the tube: hundreds of people riding the underground with no trousers on, in the middle of winter. On Sunday the 7th of December London commuters braved the cold to strip off to their underwear for this unusual event. The No Trousers Tube Ride, as it is officially called, is an annual event that takes place on the first Sunday of January...

A lot of things happen to our bodies when we fall in love. Some of the obvious physical reactions are getting butterflies in the stomach, dilated pupils and a racing heartbeat. Another one that many of us have experienced is losing our appetite.  You know the feeling: you're so smitten with your new crush that you can barely eat a bite. You skip breakfast, lunch, and dinner, and instead spend hour...

November is synonymous with Black Friday, great deals but what cost? Over consumption is endangering our already fragile planet. Is it time to change our ways? This week Do You Really Know is highlighting concepts and initiatives about reducing our consumption. You might have heard of ‘reduce, reuse, recycle’ a motto with the aim of encouraging us to think about how we consume and consider the imp...

In June 2025, the Met Office announced that the UK had had its warmest spring on record, with a mean temperature of 9.5°C, beating the previous mark set just a year prior in 2024 and exceeding the long term average by 1.4°. It’s becoming increasingly important to adapt to periods of extreme heat, and one way to make stiflingly hot days more bearable is to adjust what you eat. What should be avoide...

The number of free-to-use ATMs in the UK has been steadily declining, with a 6% drop from 2022 to mid-2023. This reflects a shift in consumer habits, as cash usage has decreased significantly. For example, weekly ATM withdrawals fell by nearly a third, from £2.2 billion in 2019 to £1.5 billion in 2023. The shift began years ago but accelerated during the COVID-19 pandemic. In 2021, cash accounted...