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TIL sewage sludge contains traces of gold, silver and platinum at levels that would be seen as commercially viable by traditional prospectors.

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D186p Today I Learned that propane has no smell. That smell of rotting eggs associated with propane is actually ethanethiol, a “stench gas” used as an additive in odorless combustible gasses to help accidental ingesters to identify it as a danger.
VyXG TIL When James Cameron was an unknown director and wanted to bring his idea to life, he regretfully sold the rights to The Terminator for $1 in 1980, and the agreement was to allow Cameron to direct it.
m1JXx TIL Newtons' apple tree is real and it's still with us! In 1816 the tree was blown down in a storm. Some branches were removed but a large portion of the tree was left and re-rooted. Surprisingly, this tree is still growing at Woolsthorpe Manor today and now is over 350yrs old
oRZNR TIL: Agent Orange was produced by Uniroyal Canada in Elmira, Ont., a small farming community just outside Waterloo.
mxMyx TIL of “Cow Tools,” a cartoon described as the most loathed Far Side strip ever, that confused so many readers the newspaper’s phones didn’t stop ringing for two days. The author, Gary Larson, issued a press release explaining the joke after receiving hundreds of letters.