Lung sounds are the noises a person makes as they breathe in and out, including sounds of regular breathing. However, wheezing, crackling, stridor, and other sounds can also occur, indicating an ...

All gases expand when the temperature increases, so when lightning superheats the air at just a fraction of a second, the air expands so rapidly that it compresses the air in front of it. Thunder is ...

Researchers conducted a global study of the factors that influence bird sounds, using more than 100,000 audio recordings from around the world. Birds make sounds to communicate, whether to find a ...