At least 200,000 species sing in ways that are silent to humans. Listen to one of them now

Some creatures are so quiet, they appear to make no sound at all. When a male treehopper calls out for a mate, he shakes his abdomen 100 times a second to produce a low sound that vibrates through the stem of the plant he is standing on. While that sound is audible to other treehoppers … Read more

Dress code: How a Winnipeg codebreaker cracked one of the ‘world’s top unsolved messages’

University of Manitoba research computer analyst Wayne Chan holds a copy of the Silk Dress cryptogram. (Trevor Brine/CBC) “Bismark Omit leafage buck bank.” That seemingly random string of words appears in something called the Silk Dress cryptogram, 23 handwritten lines on two sheets of crinkled paper that were discovered in a hidden pocket of a Victorian-era dress … Read more