
From Now I Know: “Some believe that July 4, 1776, is not truly America’s independence day. That honor should fall to either July 2, 1776, or August 2, 1776. On June 11, 1776, the Continental Congress created a sub-committee of five delegates – Thomas Jefferson, John Adams, Benjamin Franklin, Roger R. Livingston, and Roger Sherman – empowered to write a first draft of a declaration of independence. Jefferson took the lead and the quintet delivered their draft on June 28th. After a few days of debates and revisions, the Congress voted to declare independence – on July 2nd, not July 4th. nstead, we Americans celebrate independence on the 4th, the day the Continental Congress ratified the text of the document. Ratified – but not signed. According to National Geographic, many of those who signed the famous piece of parchment were not present on the 4th of July and the document wasn’t signed until August 2nd.”
Scientists are using the bodies of dead spiders as miniature claw machines

From Scientific American: “Spider corpses turned into robots sounds like the far-fetched plotline of a B horror movie. But researchers from Rice University have created just that—dead wolf spiders that can be used as machines to pick up and put down objects. In a paper published in Advanced Science, researchers have dubbed the use of biotic materials as robotic components “necrobotics.” They say this area of research could be used to create biodegradable grippers for very small objects. “We understand that many people are put off by the sight of a spider, but from an engineering point of view, the spider’s mechanism of movement is very interesting,” said Faye Yap, a mechanical engineer at Rice. The research began in 2019, when the scientists noticed a dead spider curled up in their lab. Yap and her colleagues did a quick search and discovered that spiders have a hydraulic pressure system that controls their limbs.”
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