
At the Elmcroft of Lebanon, Tennessee, the staff of the memory-care unit knew the code to the keypad that controlled the exit door. Residents weren’t supposed to be able to leave unattended. That’s how the system worked: the keypad stood between those in the facility’s care and the risks outside of it. But on March 2, 2020, the system broke down—because one resident realized the keypad was giving the code away. That afternoon, a husband and wife living in the memory-care unit left the facility. While the man and woman were gone about 30 minutes before a stranger picked them up two blocks away and returned them to the facility, uninjured, the real question came afterward: how did they manage to get through the locked exit in the first place? Local reporters say the man told staff that he had previously worked with Morse code in the military and learned the door’s numeric exit code by listening as staff punched it on the keypad. From those sounds, he figured out the code well enough to use it himself. (via Popular Mechanics)
How orchids helped inspire the evolutionary theories of Charles Darwin

In Darwin’s woods I was moved that I was feeling pleasure from something he initiated but never got to see. And in his woods are some plants he would be fascinated by. Here and there in the deep shade under the beeches is a species of orchid called violet helleborine. The orchids time their flowering for when fruits have fallen to the ground and wasps are patrolling for food. Bees avoid the gloom of the understory, but wasps don’t mind it, and are attracted to the helleborines by the promise of an intoxicating nectar (itself made by a symbiosis with fungi). When they drink it, becoming dusted with pollen as they do so, the wasps seem to get drunk. They give up on personal hygiene; they let themselves go. This means they don’t groom themselves with anything like the care they normally would, and pollen remains stuck to them. They stagger to the next flower, like a pub crawl with bonus pollination events. If you examine the orchid flowers, you’ll find a sort of shield stopping the pollen falling from the male parts of the flower onto the female parts, preventing self-pollination. (via LitHub)
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