Signal or Noise: 8 Mysterious Unsolved Sounds

(images via: darkf666, qaz2008, paulboutros) Did aliens try to send us a message in 1977? Is some mythical, nightmarish sea monster responsible for the bizarre ocean sound known as 'The Bloop'? ...

Sound Mirrors: Before Radar, Hearing Was Believing

The invention of radar in the 1930s not only saved Great Britain from the German Luftwaffe, it gave the Allies a huge advantage over their enemies in World War II. Imagine where we'd be if radar ...