As we embrace resolutions and light up the skies with fireworks, it's time to mark the arrival of the New Year! All of us on the Do You Really Know team, hoping you soaked in the holiday vibes and send you our warm wishes for a splendid 2024. Today, planet Earth has set off on another full orbit around the sun, a journey which will span 365 days until we hit ... Show More
Today
Why do we hook up with our exes so often?
You thought they were the one. You could already see yourselves growing old together… and then it just fell apart. A few arguments, one or two mistakes, and that was that.
Except that between love, resentment, nostalgia and shared memories, sometimes the urge to ‘go back for se ... Show More
5m 22s
Today
Why does smiling increase life expectancy?
An often cited estimate suggests that children smile an average of 400 times per day, while when we reach adulthood that figure drops to just 50 times, even for the happiest of us. For most adults, it’s more like 20 times.
Now of course most of the time we smile involuntarily in ... Show More
4m 37s
Jan 2024
Pourquoi l’année commence-t-elle le 1er janvier ?
C'est le moment des résolutions naissantes et des feux d'artifice, nous célébrons le Nouvel An ! Aujourd'hui, la Terre a commencé un nouveau tour complet du soleil. Il durera 365 jours, donc, jusqu'à l’année prochaine. C’est pour cette raison que le 1ᵉʳ janvier est appelé jour de ... Show More
4m 26s
Jan 2022
Why Does the Year Start on January 1? (Encore)
New Year’s Day is not only the day we turn over a new year on the calendar, but also a day where people start resolutions, companies begin new budgets, and everyone screws up writing checks.
While documenting our trips around the sun makes perfect sense, why do we use this day, ... Show More
10m 34s
Feb 2024
The Shared History Of The Chinese And Gregorian Calendars
Happy Lunar New Year! According to the Chinese lunisolar calendar, the new year began Saturday. For many, like our host Regina G. Barber, this calendar and its cultural holidays can feel completely detached from the Gregorian calendar. Growing up, she associated the former with t ... Show More
12m 36s
Dec 2023
Why is Christmas on December 25? (Encore)
Every year, people around the world celebrate Christmas on December 25. In many countries, it is the biggest single holiday of the year.
Why is it celebrated on December 25? Is there any historical basis for this date and if not, then why do we celebrate it on this date?
Learn ... Show More
8 m
Dec 2023
D’où vient l’expression “se mettre sur son 31” ?
A l’approche du réveillon de la Saint Sylvestre, vous êtes peut-être en train de finaliser les derniers détails de votre tenue de soirée. Après tout, il est coutume de s’apprêter pour fêter la nouvel année. D’ailleurs, vous avez peut-être reçu la consigne de venir “sur votre 31”, ... Show More
4m 8s