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TIL Giraffes make sound but it is too low for humans to hear

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KYEnG TIL: In a month, we ingest the weight of a 4x2 Lego brick in plastic, and in a year, the amount of plastic in a fireman's helmet. Over a lifetime, we consume about 20 kg (44 lb) of microplastic.
xVnjb TIL about Salps - a jellyfish relative. They asexually reproduce chains of clones who are all female, which then detach and breed sexually. After giving birth to a single asexual offspring they become male, while the offspring starts the cycle over.
VMk1p TIL There’s a town in Amsterdam called Hogeway where most of the residents suffer from dementia or Alzheimer’s. It has cameras monitoring residents every hour of every day, caretakers posing in street clothes, and only one door in and out of town, all designed to keep the community safe.
Nx51 TIL the United States contains three electrical power grids: The West, The East, and Texas
xVd15 TIL: Many of the most popular Christmas songs in America were written by Jewish writers