
Knots representing numbers: The mathematics of the Incas
Quechua civilization used knotted strings called ‘quipu’ to represent numerical values

Quechua civilization used knotted strings called ‘quipu’ to represent numerical values

Following the bankruptcy of the digital currency trading platform, economists and politicians are warning that the financial system could buckle if crypto assets are not immediately regulated

Two EL PAÍS music critics choose their favorite records of the year

After several disappointments at international level, the Argentina forward has now lifted the Copa América and become a world champion in the space of a year and a half

Two women and a man who lived in the home with the victims have been arrested for the crime

The removal of the bronze statue is the final task of a two-year effort to erase all traces of the Confederacy from its former capital

The energy crisis has lifted Indian businessman Gautam Adani, who survived the Mumbai terrorist attack, to the podium of the global rich list with an estimated fortune of $125 billion

A new study in fruit flies has found that blue light, which is emitted by electronic devices, can be hazardous to health

Multimillionaires who have voiced opposition to the invasion face smear campaigns by pro-Putin media and the expropriation of their assets

The House Select Committee to Investigate the January 6th Attack on the US Capitol has concluded 18 months of work with a unanimous vote, recommending that the Department of Justice prosecute the former president on four charges, including insurrection

The cartel’s reign of terror in southern Mexico has gone unchecked for over 10 years

EL PAÍS took a look at four major problems the world will have to contend with in the new year: the war in Ukraine, the fragile relationship between the West and China, climate change and economic turmoil

Celebrities like Billie Eilish and Olivia Rodrigo have been brought under the spotlight for dating older men, as the world debates about unbalanced power dynamics