› added 10 years ago

91

TIL the concept of Dibs is almost culturally universal.

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Z8G64 TIL of Helenite, a green obsidian-like gemstone created accidentally after the Mount St. Helens explosion. Local timber workers were using acetylene torches to free equipment when they noticed that the heat was transforming the volcanic ash and rock into an alluring green compound.
RvJ4 TIL that a memorial tree planted in memory of George Harrison was killed by beetles.
0dPXN TIL Kudzu is an invasive species with no natural predators that was introduced in the southern US in the 1930s to add nitrogen to depleted soil.
R77K6 TIL 20 minutes spent on the London Underground's Northern Line is as bad for your lungs as smoking a cigarette.
gr7D7 TIL the longest escalator in the western hemisphere is at Wheaton station in Wheaton, Maryland (DC Area)