How to Care for Your Eyes (and Screen Health)
Eye care is about more than reading glasses. Here is how to look after your eyes day to day, what screen use really does to them…
What Is the Ozone Layer?
The ozone layer is a band of gas high in the atmosphere that absorbs most of the Sun's harmful ultraviolet radiation. Here is…
Blood Sugar Explained
Blood sugar is the glucose circulating in your blood, your body's main fuel. Here is how it works, what causes it to rise and…
How Does GPS Work?
GPS pinpoints your location by timing radio signals from a fleet of satellites orbiting thousands of miles overhead. Here is the…
The Truth About 10,000 Steps a Day
The 10,000-steps target is famous, but it began as a marketing slogan, not a scientific finding. Here is where the number came…
How Do Clinical Trials Work?
Clinical trials are carefully designed studies that test whether a new treatment is safe and effective in people. Here is how…
How to Stretch Properly
Stretching can improve flexibility and ease stiffness, but only if you do it well. Here is the difference between dynamic and…
Understanding Anxiety: Signs and Support
Anxiety is a normal human response that becomes a problem when it is persistent or out of proportion. Here is what anxiety is…
What Is Mindful Eating?
Mindful eating means paying full attention to the experience of eating - the food, your hunger and your fullness - rather than…