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TIL The AT&SF Railroad operated a freight only airline division starting in 1946, pioneering refrigerated compartments, operated from West Coast to the Midwest. They were shut down by the CAB in 1947, citing a rule not allowing railroads to operate aircraft. Names the Santa Fe Skyway.

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MexOb TIL that silly string has military usage in the detection of tripwires. The string would settle onto the ground in areas without tripwires, but catch on to any that is present. The silly string reveals the wire, but it will not set it off due to its light weight.
VMmYm TIL a musician, Sivu, who did his entire music video in an MRI machine.
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