You all know the score. A train leaves one city travelling at 35 miles per hour and another races toward it at 25 miles an hour from a city 60 miles away. How long do they take to meet in the middle?

When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Sometimes, you follow the strict, formal rules of expression in your profession. And sometimes ...

Frustrated maths students may have a good excuse. Some teaching methods meant to make maths more relevant may be making it harder to understand, US researchers say. They say students who are taught ...