Since at least 1960, submarine personnel in Antarctic waters had been hearing a mechanical, repetitive quacking -- pulses between 60 and 100 Hz arriving every 1.6 to 3.1 seconds. They named it the bio-duck. Acoustic researchers called it "one of the ...
For 40 years it has been lying forgotten in a drawer - but a rediscovered fossil has turned out to be the first dinosaur bone ever found in Antarctica.