blog.sciencemuseum.org.uk

X0g7X TIL pulmonary tuberculosis was associated with fragility and sexual attractiveness in the 19th century
gr5NX TIL Helium was detected on the sun before it was detected on Earth. That's why it was named for Helios, the Greek god of the sun.
m1nLR TIL 1816 was the "Year Without a Summer," due to very low temperatures. People believed the Sun was about to extinguish as large Sunspots were visible on it's surface, spreading doomsday panic. In actuality, the cause was due to Mt Tambora, the largest volcanic eruption in human history.