› added 6 years ago

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TIL: Cotton grocery bags would need to be used 7,100 times to match the environmental impact of a plastic bag that is used only once

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via reddit.com

v1gJj TIL of spray paint on sidewalks called “utility graffiti,” which uses colors and symbols to identify pipes and wires underground. Marking the ground wasn’t standard until 1976, when a dig in Los Angeles punctured a gas line and created a “wall of fire” that killed 9 people and destroyed 7 buildings.
9Y7kM TIL scientists believe there are 380 trillion individual virons inside the average human body
O1Za TIL that Dogs laugh.When a recording of a dogs laugh is played to puppies they instantly show signs of joy and the same sounds have a calming effect on dogs in an animal shelter
YEbG TIL that if a similar show launched today that went as far back as That 70s Show did when it first aired, it’d be about a group of high schoolers in 1994.
8aoQX TILabout an astronomer who in 1986been tryin to trace a 75 cent computer time discrepancy for 10 months found a German hacker selling defense secrets to the KGB!