Have the oceans become 30% more acidic? Did the WHO get some of its excess death estimates wrong? Are just 100 companies responsible for 71% of global emissions and how stressed are South Africans?

Collecting like terms means to simplify terms in expressions in which the variables are the same. In the expression \(5a + 2b + 3a - 6b\), the terms \(5a\) and \(+ 3a\) are like terms, as are \(2b\) ...

Tim Harford talks to authors Chip Heath and Karla Starr about their book ‘Making Numbers Count’, exploring how we can better explain complex numbers to the public. Show more Have you ever looked at a ...