One of the key metrics used to gauge the efficiency of a business is the activity ratio. This type of financial measurement provides insights into how well a company utilizes its assets to generate ...

A powerful geomagnetic solar storm is helping to unveil northern lights across the United States. Here's how auroras become visible.

Children get annual checkups with a pediatrician to determine if they are thriving. This is done by assessing if their height and weight are progressing at expected rates. But how do we measure ...

Skies over North America erupted this week with shimmering colors: Shades of pink, purple and green swayed across the skies in northern as well as some southern states. It followed two similarly ...

Locomotor activity is the motion necessary to get from one place to another. It is closely linked to complex human activities such as learning and motivation, and it is key to avoiding or approaching ...