Do you really know?

They buzz around your fruit salad, hover over your barbecue, and seem to think the edge of your pool is their hangout. Every summer, it’s the same story - wasps turning your outdoor bliss into a swatting frenzy. But it doesn’t have to be this way; there are ways to keep them at bay.  There are gentler, and smarter ways to make them buzz off. Essential oils are a great place to start. Scents like l...

Each of us has our own unique experience of social bonds, influenced by our childhood, previous relationships, and personality. And there’s actually a psychological theory that helps explain how we experience our relationships: attachment theory. In psychology, attachment is the strong bond between an individual and an "attachment figure." In most cases, our first attachment figure is the parent w...

Some people believe they simply can’t function in the morning until they’ve had a cup of coffee. Others seem to be grumpy every morning, as if they’ve got out of the wrong side of the bed.  Of course, a poor night’s sleep can be the cause, whether it be down to stress, not getting to bed early enough, drinking or other physical conditions like sleep apnea. Psychological factors can also come into...

Voluntourism is the practice of volunteering one’s labour to a charitable cause in a developing country, in return for a soul-cleansing, perspective-changing, CV-bolstering experience. Perhaps a bit cynical? But with good reason.  Whilst it could be a mutually beneficial redistribution of wealth from the developed world to the developing, voluntourism harbours a dark and exploitative underworld. I...

If just thinking of spiders is enough to make the hairs stand up on the back of your neck, or you jump any time you see one, the chances are you suffer from arachnophobia. It affects up to 15% of people according to the Cleveland Clinic, making it one of the most common phobias out there. As it turns out, human fear of spiders may well be down to evolution. Researchers from Germany, Austria and Sw...

Warm summer nights often bring unwelcome guests into our homes in the form of mosquitoes. For now we fortunately don’t have any mosquito-borne diseases being transmitted to humans in the UK, but with the warmer temperatures brought on by climate change, it may only be a matter of time until that changes. You may have noticed that some of us seem to attract more mosquito bites than others, even wit...

It's back to school! Do You Really Know is dedicating a special week to sport. Because moving and doing regular physical activity is important for our physical and mental health! Listen again to our episodes about sport! One of the biggest challenges that we have been facing and will be continuing to face in the coming years is protecting our planet. So it’s worth reflecting on how we can exercise...

Flying is far from being the most eco-friendly means of transport. Right now it’s responsible for around 2% of global carbon emissions, but that could grow to as high as 16% by 2050. With the notable exception of travel restrictions in the last two years, the airline industry has gradually been transporting more and more passengers for decades now. While that continued growth is impressive, we hav...

Amazon founder Jeff Bezos stepped down from his position as the company’s CEO to focus on other projects. He’ll remain executive chairman at Amazon but now wants to dedicate more time to other projects, including his space tourism company Blue Origin.  Following that surprise announcement, British business magnate Richard Branson also declared his desire to go into space with his company Virgin Ga...

To understand where white spots come from, we must first explain how nail growth works. If you’ve ever had white spots on your nails before, you may have been dismissively told that it's down to a lack of calcium or zinc. Basically, some mineral-deficiency. But this popular belief doesn’t really have any basis in fact. According to Healthline, nails grow an average of 3 millimeters per month. Thei...

Summer is here! The sun’s out; you’ve got a week or two off work and the beach and sea are calling. It’s time to relax, soak up some much-needed vitamin D, and why not open the door to new romantic encounters. That’s all well and good if you’re single; but if you’re in a relationship, bear in mind that summer shading is becoming more and more common. It basically means putting a romantic relations...

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...

The musical film The Little Mermaid was released in cinemas on 24 May 2023. This movie highlights the importance of representations in the media. This effect has a name: the Scully Effect. The combination made for an unprecedented representation of women on TV at the time, with audiences far more accustomed to seeing scientists played by white men. The fields of Science, Technology, Engineering an...

You’d think a day spent lounging on the beach would be the ultimate recharge. No deadlines, no emails, just rest and relaxation. And yet, by the time you head home, you’re wiped out. Not just relaxed, completely drained. It's supposed to be restful, so why does it feel like you’ve just run a marathon in flip-flops? It’s not just the sun, it’s the heat, the humidity, and the work your body puts in...

In June 2022, Canadian superstar singer Justin Bieber took to Instagram to reveal that he has a rare neurological disorder called Ramsay Hunt Syndrome. He took a break from his world tour, and would do the same just a few months later, again using social media to tell fans about suffering with exhaustion and needing to “make health the priority”. After trying to restart the tour, he would eventual...

Leaving food out for the birds seems like a harmless and even generous idea, but research by the British Trust for Ornithology is showing that bird feeders might be doing more harm than good. Between 2008 and 2018, chaffinch numbers dropped by 29 per cent in the UK, while 67 per cent of the country's greenfinches were lost, the study reveals. How do bird feeders spread this disease? How can I keep...

Not getting a good night’s sleep can certainly leave you feeling grumpy and groggy, but can it also make you selfish? Sleep experts at the University of California, Berkeley certainly seem to think so, and apparently even losing just one hour of sleep is enough to make you less generous towards others and that includes friends and family.  The team conducted a number experiments which were publish...

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 an eco-friendly beach? For many people, beaches are synonymous with the summer holiday season. Beach holidays have been popular since the second half of the 19th century, and are the archetypal form of mass tourism. With millions of people...

Feet carry our body weight and bear the impact of every step we take. Furthermore, they play an active role in balance control, thanks to sensors located along our tendons.  Whether you’re on the bus, relaxing at home, or taking a walk while listening to your favourite podcast, take a moment to look at your feet. Believe it or not, they account for a quarter of the bones in your body. Each foot ha...

Multitasking, or the art of juggling several tasks at once, is more common than ever before in the workplace. In 2022, a German think tank called Next Work Innovation released a study which showed that knowledge workers are interrupted on average every four minutes during the working day! In a past episode of Do You Really Know, we discussed how our brains manage to cope with multiple demands at o...

Whether it’s reading, journaling, enjoying breakfast, or scrolling through social media, these are just a few activities people indulge in while lounging in bed. For some, this has evolved into an art form, popularized by a viral TikTok trend known as “bed rotting.” This habit embodies a laid-back attitude, where productivity and responsibilities are momentarily cast aside in favor of a few minute...

Every summer, the pattern repeats itself: the drinks are flowing, the atmosphere is relaxed but as soon as it’s time to light the grill, men gravitate toward the fire while women handle everything else. The result is a quiet but familiar gender split. And it’s not just anecdotal.  According to an OpinionWay survey for Campingaz in 2015: when preparing a barbecue 75% of women do the shopping, 72% d...

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...

I’m sure at some point as a child on holiday you were told not to go swimming right after eating. Popular belief suggests that we should wait a certain amount of time before getting into the water, in order to let our bodies finish digesting. Some parents swear by a 30-minute rule, while others say up to two hours, depending on how heavy a meal has been consumed! But in reality, we know that diges...

There are an increasing number of trends and products out there to rid your body of toxins, such as infrared saunas, liver-purifying supplements and detox diets. But what exactly are toxins? According to the Cambridge Dictionary, a toxin is “a poisonous substance, especially one produced by bacteria, that causes disease.” However, today we tend to use the word toxin to refer to all the harmful sub...