What does that mean? I'm still worried! A. If your baby is "following the curve" of the growth chart, she's paralleling one of the percentile lines on the chart, and the odds are good that her ...

Parents are a competitive bunch. So when the pediatrician whips out a growth chart and ranks baby's height and weight in percentiles, it's easy to wonder if something's wrong. But growth ...

We're in the midst of the Earth’s sixth mass extinction crisis. Harvard biologist E. O. Wilson estimated that 30,000 species per year (or three species per hour) are being driven to extinction.

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 ...