What’s the perfect number of cards for playing poker? According to a new mathematical discovery, the answer is the ...

Learn about the negative correlation coefficient, its significance, comparison with other coefficients, and real-world ...

President Trump uses a lot of numbers. When he rallied Republican members of the House earlier this week, he used the word percent more than 30 times. And as NPR senior White House correspondent ...

A 2,500-home development has been described as a perfect example of how to build a community for the future, three decades on. Great Notley Garden Village in Braintree was built in the early 1990s, ...