How many people in a group do you need to have before the probability of a shared birthday amongst them?

Get reading! There’s no time to waste. At 225 million years per rotation, the sun will only orbit the Milky Way another 22 times before...

Every four years, maths nerds, astronomers and calendrists alike get pretty excited about today's date, 29 February.

Debunking an urban myth and 21 stages of Tour de Carb - how would you eat your way through?

Kids counting down til Santa comes. Watch me in conversation with futurist Amy Webb at SXSW. And was Plato ever wrong?

Go is the most simple but strategically complex board game of them, all played on a 19x19 grid...

Plus the mathematical beauty of the James Webb telescope.

An English haiku, Has seventeen syllables, Flowing through three lines. All that and more as we go deep on the number 17...

Sixteen things you mightn't know about the Matildas' #16 Hayley Raso. Plus catch me on the ABC TV's Q+A special National Science Week...

Hanging with the stars, determining dermatoglyphics, necking a Melchizedek and books to be won. Thanks for reading my nerdy newsletter......

An ancient puzzle, a dummy spit on the golf course and no fours on the floor. We’ve packed a fortnight of fun into number 014 and you're...

What scares a triskaidekaphobe? The United (much smaller) States. And an incredibly cool new shape. Enjoy these fascinating facts about...

Let's meet the largest number that has just one syllable (single-morpheme). Take it away 12.

What do Spinal Tap, Stranger Things and the Australian Cricket team have in common? That’s right, the first two-digit prime number – 11!...

Welcome to 2023! I know it's been a while since we geeked out, but it’s been a big few months, including an incredible trip to Antarctica...

Welcome to my most jam-packed number newsletter yet. The last of the single digits, 009 won't disappoint! 9th pitch drop ​ Scientists are...

In Chinese culture, the number 8 is considered lucky because the Cantonese word for 8 sounds similar to the word for 'prosper' or...

Think of a number between 1 and 10. How many colours in a rainbow? (Hint: strictly more than 7!) What is cyclic permutation? And an...

A number so sexy it's perfect. In conversation with AFLW's Daisy Pearce. A chance to navigate the Milky Way. And raising over $70,000,000...

It's been an inspirational May (the 5th month!), packed full of schoolkids, boybands and acts of kindness Last week I was thrilled to run...