Megaraptor was discovered with enormous claws that immediately sparked bold claims about what kind of predator it was. But as more fossils surfaced, the picture became more complicated, raising doubts ...

Concentration is the mental effort you put into a task. You might lose concentration due to distractions, lack of sleep, aging, or health conditions. Consider talking with a doctor or therapist if ...

Obesity is an increase in the size and amount of fat cells, leading to a body mass index (BMI) of 30 or more. However, a high BMI doesn’t always predict health problems. Obesity affects about 42% of ...