As a parent, it’s natural to want to track her progress, especially when it comes to height and weight. Growth charts can ...

This could represent a real problem. There are separate growth charts for weight, height, and head circumference. These simply represent the average weight, height, or head circumference of a ...

and human population growth (e.g., how fast will the human population grow, and what does that mean for climate change, resource use, and biodiversity?). Studying population growth also helps ...