In Trinidad and Ghana, it’s known as susu. In Senegal and Benin it’s tontines. In Nigeria, where it began in the 1700s, it’s esusu. Whatever you call it, this system of large-scale money-pooling for ...

Jeremiah Bartz owns shares in Nvidia. A shard of smooth bone etched with irregular marks dating back 20,000 years puzzled archaeologists until they noticed something unique – the etchings, lines like ...

Augustus De Morgan, born on June 27, 1806, was a pioneering British mathematician and logician whose contributions laid the foundation for modern symbolic logic and algebra. His legacy continues to ...

Peter Schumer does not work for, consult, own shares in or receive funding from any company or organization that would benefit from this article, and has disclosed no relevant affiliations beyond ...

Denver schoolmen decided to give 4,672 of the city’s high-school students a battery of tests to find out whether the protesters knew what they were talking about. Last week the schoolmen admitted that ...