What's that sound? It may sound like a very loud buzzing or droning that lasts all day and into the night. But before you call the police to report what you think could be a siren, whine or roar, ...

Bird-watching—and, necessarily, listening—has exploded in popularity in recent years. But put your ears a little closer to the ground, and you might hear a quieter but just as potent kind of song ...

When night falls, a high-stakes acrobatic drama takes the stage, a swirl of bats hunting insects, trying to outmaneuver each other in aerial pursuit and escape. Science reporter Ari Daniel has the ...