Bats have an uncanny ability to track and eat insects on the fly with incredible accuracy. But some moths make these agile mammals miss their mark. Tiger moths (left), for example, emit ultrasonic clicks that jam bat radar. Now, scientists have shown that hawk moths (right) and other species have also evolved this behavior. The nocturnal insects - which are toxic to bats - issue an ultrasonic "warning" whenever a bat is near. After a few nibbles, the bat learns to avoid the noxious species altogether. Interestingly, the sound-producing apparatus is typically located at the tip of the moth's genitals. ...

After two years of work, Martin Molin of the Swedish band Wintergatan debuted a fully custom-made machine that plays music using 2,000 marbles. The marble machine features multiple instruments including a bass guitar, cymbals, and a vibraphone all played by falling marbles. Apart from the 11 mm steel ball bearing marbles, he made all the gears powering the machine by hand.

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Have you ever wondered what may be among the loudest sounds? Or possibly what may happen being exposed to such sounds other than bursting your eardrums? Take a look at this informative video