Life expectancy at age 65 years old is the average number of years that a person at that age can be expected to live, assuming that age-specific mortality levels remain constant. However, the actual age-specific death rate of any particular birth cohort cannot be known in advance. If rates are...

When you think of someone who is an engineer, do you imagine a man or a woman wearing a hardhat? How about when you imagine a teacher standing in front of a class of schoolchildren? If you answer “a man” to the first question, and “a woman” to the second, there’s probably a reason. And...

Countries vary in the way they use marks, but they all tend to reward the mastery of skills and attitudes that promote learning. Teachers tend to give girls and socio-economically advantaged students better school marks, even if they don’t have better performance and attitudes than boys and...