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TIL that Darwin dedicated 40 years of his life to studying on earthworms.To figure out how their auditory system worked,he would play piano for them.

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0dN4M TIL the famous silent film Nosferatu (1922) was given an unauthorized rerelease with sound in 1930 that used previously unreleased footage. This version survives today, albeit without sound, but has never been released on home video.
VMKwm TIL Nearly half of the United States GDP comes from just 5 states: CA, TX, NY, FL, and IL. California is by far the largest contributor at 1/3 of that, or nearly 15% of total US GDP.
epw4g TIL that life expectancy in the 1900 was 31–32 (world average)
Z8xx4 Space is not empty, nor is it silent. While technically a vacuum, space nonetheless contains energetic charged particles, governed by magnetic and electric fields, and it behaves, unlike anything we experience on Earth. In regions laced with magnetic fields, such as the space environment surrounding our planet, particles are continually tossed to and fro by the motion of various electromagnetic waves known as plasma waves. These plasma waves, like the roaring ocean surf, create a rhythmic cacophony that — with the right tools — we can hear across space.
p8JP8 TIL that soldiers that wielded bronze swords used the metal filings from sharpening their blades after combat as a disinfectant for their wounds, due to copper's anti-microbial properties.