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TIL Concrete never stops curing. It will literally take forever to completely set. Also, cracking is a natural occurrence in concrete, so don't panic if you see a crack in your sidewalk.

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Ex8P TIL George R.R. Martin has revealed the remaining major plot points of A Song of Ice and Fire to only the two producers of the HBO television series, in case he should die before Winds of Winter and A Dream of Spring are published.
N5O8 TIL the same PR firms that tried to argue that tobacco use did not link to lung cancer received money in 2009 simply to increase the debate over the long term health consequences of natural gas fracking.
x6jY7 TIL about lake Hillier, which is known for its vibrant pink color. It is due to the presence of the algae Dunaliella salina. It causes the lake's salt content to create a red dye, which helps produce its pink color.
VBnKQ TIL Laconia incident during WWII. A U-boat sank RMS Laconia mistaking it for a Supply vessel horrified, the Germans tried helping survivors, but Allies attacked, leading to the "Laconia Order" restricting aid to survivors.
mElP TIL there is a Hatian martial art called machete fencing