Editor’s Note: Learn more about the legendary Hagoromo chalk on the latest episode of Great Big Story, a new podcast from CNN about the surprising stories all around us. Some call it the Rolls Royce ...

This spring, an 80-year-old Japanese chalk company went out of business. Nobody, perhaps, was as sad to see the company go as mathematicians who had become obsessed with Hagoromo Fulltouch Chalk, the ...

Two weeks ago, online documentary site Great Big Story premiered a mini-film on Hagoromo Fulltouch Chalk, the legendary Japanese chalk with a cult following among mathematicians (as one of them says, ...

The history and mystery of a cult favorite whose continued existence is an unlikely story that bridges two countries long at odds. Hagoromo chalk has become a cult favorite of elite academics and ...

As interactive whiteboards and iPads take over classrooms across the world, it is understandable that companies relying on a demand for blackboard chalk might struggle. What is perhaps less ...

Hagoromo Bungu, which produced 'Hagoromo Chalk,' which was used by educators, announced that it would be closed in October 2014 and ended sales of Hagoromo Chalk at the end of March 2015. The ...

Mathematicians are paying big bucks to stockpile the Hagoromo chalk from Japan, which some have called ’the nectar of the gods’ In Greece, there’s been a rush on the banks. In mathematical circles, ...

When prep school teacher Shin Hyeong-Seok came to Japan some 15 years ago and discovered the holy grail of chalk, he fell so deeply in love that he became an importer. Now, he manufactures the ...

Editor’s Note: Learn more about the legendary Hagoromo chalk on the latest episode of Great Big Story, a new podcast from CNN about the surprising stories all around us. Some call it the Rolls Royce ...

From reproductive rights to climate change to Big Tech, The Independent is on the ground when the story is developing. Whether it's investigating the financials of Elon Musk's pro-Trump PAC or ...