There's a rather famous problem in math of probability called the Birthday Paradox. Let's get into how it works, and how creative uses of this hypothetical problem have real-world applications!

Imagine a group of people. How big do you think the group would have to be before there's more than a 50% chance that two people in the group have the same birthday? The answer is - probably lower than you think. David Knuffke explains...

Birthday math has never been more fun.

Sad Film

Kids rarely get to celebrate when they are in the hospital and having a birthday there is not the ideal situation. After seeing her godson spend some time in the hospital, surrounded by kids who were having their...

If you are a homeless family there are a lot of things you don’t have – easy access to a private bathroom, regular hot meals, a comfortable bed. There is also a huge hole where happy family gatherings, like...

With all the recent negative news surrounding some major airlines, we thought we'd bring you some positive news about an airline that is helping to spread kindness on their flights!



Carrie Grace is all about spreading...

Howcast - If you single-handedly are keeping the belated birthday card industry alive, you need a system.

Do you rely primarily on social media to deliver birthday wishes? Jeremy Epstein, a successful marketing professional, likes to distribute his birthday wishes with a personal touch we so infrequently see in today's media age. He...

This episode of the Weekly Good highlights an organization and an individual who demonstrate that with a little ingenuity and hard work, a negative situation can be completely flipped to a positive one.



First, the...

How many people do you need to have in one room to be sure that two will share the same birthday? The answer is not as high as you might think... Maths - Algebra A Twig Math Film. Reinforce and extend the learning required by the...

Why do we have a leap year once every four years?
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Physical processes -The Earth and beyond - Sun,
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Learning Points
A leap year occurs every four years.
T

here are 366 days...

In this video lesson we talk about regular -IR verbs in the present tense. You might watch the previous video on Vivir for a little introduction to this video.

In this episode of Nature League, Adrian asks Brit about whether human mating seasons are a thing, and why we’re different from other species in this arena.

Hi, Neighbor! Ranger Michael welcomes you to your National Park Service neighborhood, and encourages you to visit your neighbors during the National Park Service Centennial in 2016.<b<br/>r/>

CREDIT: NPS

This short video explores the two calendars; the Tzolk'in and the Haab and how important they were to the Maya people.

Today you’ll learn specific birthday vocabulary to use on your IELTS Speaking test.





You could definitely be asked about birthdays on your IELTS

Speaking test.

For inst

ance, in Speaking...

For years, global music publisher Warner/Chappell claimed copyright of the Happy Birthday song, demanding payment for any public performance of it. Jenn Nelson tells the story of her four-year campaign to prove that the company did not...