$19,000,000: Amount, in $US, awarded by the Federal Aviation Administration (FAA) to 14 universities to reduce aviation noise
39: Length, in seconds, of the original (and newly rediscovered) recording session that yielded the famed “Wilhelm scream”
40: Average number of “clicks” emitted by “stressed” plants over the course of an hour
. . .
¹Footnotes: FAA: faa.gov. Wilhelm: pastemagazine.com (via John Kannenberg). Plants: gizmodo.com.