A new sound wave technique can help treat a deadly brain ... The blood-brain barrier acts as a line of defense, making an extra wall around the brain to keep toxins and pathogens from getting ...

Earthquakes create ripple effects in Earth's upper atmosphere that can disrupt satellite communications and navigation ...

Save guides, add subjects and pick up where you left off with your BBC account. A sound wave is a vibration that travels through a solid, liquid or gas such as the air or water. A loud sound has a ...

Now, researchers ... Imagine you are playing the guitar—each pluck of a string creates a sound wave that vibrates and interacts with other waves. Now shrink that idea down to a small single ...