In 2012, a research group headed by Aalto University Professor Unto K. Laine proved that the source of sounds associated with the Northern Lights is located close to the ground at an altitude of ...

Adventitious breath sounds are abnormal sounds resulting from unusual airflow through the lungs. They can be due to conditions, such as asthma or bronchitis. Anything that changes the normal airflow ...

Blood flows through the heart and generates noises known as heart sounds. These noises occur due to heart valves opening and closing as the heart pumps blood. A doctor can gain valuable information by ...