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TIL that sodium bicarbonate (Baking Soda) kills cockroaches. Once consumed, it causes the internal organs of cockroaches to burst due to gas collection.

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YpQK7 TIL The 2-step initial pawn move is absent in Indian chess; thus, en passant is also absent. Normal castling with rook and king is absent. The king can make a knight's move once in a game, known as Indian castling. On reaching the opposite end of the board, pawns promote to the piece of that square.
9ngm TIL the Khmer Rouge killed ~25% of Cambodia’s populace by making everyone work 12 hours daily on farms. Intellectuals were killed. Schools, religion, freedom to travel, money, factories, & hospitals were eliminated. The K.R. exerted control by limiting married couples’ visits & scattering families.
9Y8pG TIL that in 2013, a Texas woman tried to kill a snake by dousing it in gasoline and setting it on fire. The snake's final act of defiance was to slither into the house and set it on fire.
Yb5W TIL of SABRE engine technology - basically planes that go from the ground to an altitude of 25 km, reach Mach 5.5 and then become rockets, kick you back into your seat and reach a speed of Mach 25. Such planes could reach anywhere in the world in roughly 4 hours.
0dy6y TIL that an airgapped laptop was intentionally loaded with 6 famously catastrophic computer viruses, worms, and pieces of Malware for the commissioned art piece titled "The Persistence of Chaos". Much of the $10,000+ spent to produce the work went toward the creation of an effective firewall.