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TIL in Shakespeare's time, onstage special effects included using real animal blood, bones and intestines

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VMw8G TIL It's nearly impossible to read in your dreams due to the inactivity of those parts of the brain while asleep.
d8Klj TIL until modern times, when artificial lighting allowed us to stay awake longer, most people would go to bed around sunset. The actual time spent sleeping was split into two phases – known as first sleep and second sleep.
7jMr TIL that although 98% of scientists say they believe that humans evolved over time, just 66% of Americans believe the same.
nYgG TIL that pop rocks (and other popping candy) work by carbonating the candy in its liquid state, creating high pressure pockets of gas that are released when you eat it. Effectively, its a carbonated food as opposed to a carbonated beverage.
ANpJw TIL that in 2011, Steve Whittaker, Researcher at IBM and Professor of Human Computer Interaction at UCSC, showed that Sorting Email into Folders is Mathematically Inferior to Searching and Scrolling.